Hello Harichandana,

If your rank in APICET is 3693 you won't get a seat in Andra University even with the BC-D category but there are some other good colleges where you can pursue your MBA. Here is the list of some good colleges accepting APICET rank - 

1) Madanapalle Institute of Technology and Science, Chittoor

2) Prasad v. Potluri Siddharth Institute of Technology, PVPSIT, VIJAYAWADA

3) Pydah college of engineering and technology, Visakhapatnam

4) Rajeev Gandhi memorial college of engineering and technology nandyal, Kurnool

5) SRK Institute of Technology, Vijayawada

6) Sir C R Reddy College of Engineering, Eluru

7) Vasireddy Venkatadri Institute of Technology - (VVIT), Guntur

8) Vignan's Institute of information and technology, Visakhapatnam 

9) Vignan's Lara Institute Of Technology and Science - (VLITS), Guntur

(The above list is priority based from 1 to 9)

Hope you get the best college