Business Visa - B1

Hi,

I had applied for B1 VISA in Nov 2017 and got rejected. Q&A were as per below

1) Why are you going to the US?
A) To attend requirement gathering and business strategy meeting with client
2) Who is your client?
A) Told the client name
3) How much experience do you have?
A) 5 Years and 3 months
4) What is your designation?
A) Team Leader
5) Have you ever been to out of India for business?
A) No

That's it. Those were pretty straight forward questions. I answered it polietly and up to the point.
No idea why they denied the visa.

I applied again after a month. However, I knew there was high possibility of rejection as I was re-applying within short span.

Below were Q & A of second interview.

1) Why are you going to the US?
A) To attend business strategy meeting with client, I will be going with my colleague who already holds a valid US visa and been there couple of times.
2) Who is your client?
A) Told the client name
3) Is it the same client that you had applied on 6th Nov?
A) Yes
4) Why they are sending you?
A) I am a key person of this project and working on that since long. As I have theoretical idea of most of the module of our application, both my client and management think that it would be great to have me on client's
place to see the real time scenario and discussion of business strategies would be much more effective and productive.
5) What is your salary?
A) 55k/month
6) How much experience with the current organization?
A) 5 years and 4 months
7) What is your designation?
A) Team leader
8) Duration of your visit?
A) 2 Weeks
9) You haven't travel outside India?
A) No

As expected, they denied again.

I have applied again for the third time and my interview is scheduled mid december 2018.
Do you have any input what could be the reason about earlier rejection?
What shoudl I take care of in my next interview. FYI I am still in the same company and applying for the visa to visit the same client.

Any inputs would be valueable for me.
Thanks.