Visitor Visa - B2

First i would give thanks to my almighty God Jesus for granting my parents a 10 yr visa which i thought was impossible.
Our scenario was, we are only 2 children for our parents. i am on H4 and my brother is on F1.My husband is the sponsorer
My parents had their visa on May 12th.
The questions asked by the visa officer are

To my Mom
1. Where do you work??
Mom: i work as.....at....
2. What is your qualification??
Mom: P.G in....
3.What is your salary??
Mom:...../month

To my Dad
1.Where do you work??
Dad: i work as ....at ....
2.What is your salary??
Dad:....../year
3.Why do you want to go to U.S??
Dad:Tourism and to see children
4.How many months you want to be there??
Dad: 4
5.Is your daughter married??
Dad:Yes
6.What is your son doing??
Dad: he is doing his double masters in ... and ..
7.Do you have any children in India??
Dad:No, we dont have anyone in india

Thats all..he didnt check any documents and said your passports will be couried within a week.They got their passports today(may 14th) with a 10 yr visa.
i must also thank this forum as it provided me with all the documents needed for the visa and also i got most of the answers to my questions by reading the posts and so i thot of posting our experience so others can get benifited