L1, L2 Visa

I went through the visa interview and the officer stamped on I-129S as L1A and also provided dates for 3 years and mentioned visa is approved and I will be getting the passport within a week.

But he also mentioned that he will have to check with his supervisor if it would be an L1A or L1B? I am not sure what it means.

Appointment - 6th April 11AM

He asked me a standard set of questions

VO - Company name
Me - XXX
VO - Which type of visa
Me - L1A
VO - How long with the company?
Me - 9 + years
VO - How many years of managerial experience?
Me - 5 years
VO - Do you manage people?
Me- I mentioned I manage people as well as projects
VO - Have you been earlier on L1 or any other visa?
Me - I Mentioned all my previous visas (B1, H1B, and F1) (Note: All more than 9 years back)
VO - What is your highest education
Me - I replied
VO - Which location you will be going to?
Me - I answered
VO - Where is it located exactly?
Me - I explained it to him.
VO - How many people are you managing?
Me - I told him my current reports (8) and my future role (11)
VO - He again asked me what would be doing other than people management?
Me - I mentioned the project management part as well.
VO - I am approving your visa as requested as L1A and you will get your passports within a week. Although I have to check with my supervisor if you would qualify for L1A or L1B. He then gave me 1 stamped copy of the I-129S form with L1A circled and the dates as well and kept my passport.

It's been 3 business days since the interview. My status on the website still shows "Administrative processing".

Any pointers would be of great help.