A cylinder head is being disassembled. One of the valves is mushroomed at the tip preventing the valve from being removed. Technician A says a hammer and a thin punch should be used to drive the valve out. Technician B says a hydraulic press may be used to remove the valve. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: D
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