Which of the Following Statements Is LEAST-Likely True

Which of the following statements is LEAST-Likely true?

A) When installing the crank, cleaning the recesses where the bearing lock tab will fit is often the cause of a tight crankshaft.
B) When installing the crank, clean the main bearing bores to prevent oil clearance and heat transfer problems.
C) It takes only a small film of dirt left from the hot tank, bake oven, or shot peening process to increase the oil clearance by 0.001" or more.
D) Often, during an oil clearance check on a newly rebuilt engine, excessive clearance is discovered.