A Technician Is Checking a Car with an Owner's Complaint

A technician is checking a car with an owner's complaint of poor braking performance and a low brake pedal. The master cylinder is full, and there are no signs of fluid leaks in the brake system. When he holds firm pressure on the brake pedal, the pedal slowly drops. What could be the problem?

A) internally leaking master cylinder
B) internally leaking caliper
C) leaking wheel cylinder
D) frozen pressure differential valve

Correct Answer:

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