Technician A uses a 30-degree stone for topping a 45-degree valve seat. Technician B uses a 60-degree stone to lower a 45-degree valve seat. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

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The Answer of Technician A uses a 30-degree stone for topping a 45-degree valve seat. Technician B uses a 60-degree stone to lower a 45-degree valve seat. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Technician a Uses a 30-Degree Stone for Topping a 45-Degree