Yes ,you can get into grade c colleges like

 1.Madanapalle Institute of Technology and Science, Chittoor

2. Prasad V. Potluri Siddhartha Institute of Technology - [PVPSIT], Vijayawada
3. Pydah College of Engineering and Technology, Visakhapatnam
4. Rajeev Gandhi Memorial College of Engineering and Technology Nandyal - [RGMCET], Kurnool
5. SRK Institute of Technology, Vijayawada

Hello Anvesh,

3907 rank means you must have scored somewhere between 81-90 out of 200 which means you are eligible for all the category C colleges. 

Some of the colleges where you can apply are:

1. MITS ,chittoor

2. PVPSIT,vijaywada

3. Pydah collegeof engineering and tech, visakhapatnam

4. RGMCET,kurnool

5. SRK institute of tech,vijaywada

I hope this was helpful.

Thanks.