18. When cutting copper pipe and tubing , tighten the cutter to turn with each revolution of the tube cutter until the pipe is cut.

18. When cutting copper pipe and rubing, tighten the cutter to turn with each revolution of the tubit eutter untit the pipe is ait. A. 1/4,3/A B. 1/2,3/4 c. 1/2. 7/0 D. 1/4,1/2