What marks do I need in my prerequisite classes for the Ph.D. in Mathematics?
You need to get at least a B in each prerequisite class.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What marks do I need in my prerequisite classes for the Ph.D. in Mathematics?

### Input: Not applicable

### Response:
You need to get at least a B in each prerequisite class.<|im_end|>