What Should Be Done to Correct Bolt Holes in the Block

Multiple Choice

What should be done to correct bolt holes in the block that are pulled up (raised) ?

A) The threads should be cleaned with a bottoming tap
B) The bolt holes should be tapered at the surface by chamfering
C) The threads should be cleaned with a bottoming tap and the bolt holes should be tapered at the surface by chamfering.
D) None of the answers is correct.