Tech A says that during anti-lock braking brake fluid may be returned to the master cylinder. Tech B says that solenoid valves in the hydraulic control unit will isolate the master cylinder from the brake circuit when it is in the "hold"mode. Who is correct? Select one: a. Tech A b. Tech B c. Both A and B d. Neither A nor B

c. Both A and B<br /><br />Both Tech A and Tech B are correct. During anti-lock braking, brake fluid may be returned to the master cylinder. This is a normal part of the braking process, as the brake fluid is pumped back into the master cylinder after being used to apply pressure to the brakes. Tech B is also correct in stating that solenoid valves in the hydraulic control unit will isolate the master cylinder from the brake circuit when it is in the "hold" mode. This is done to prevent further braking action and allow the wheels to rotate freely.