Which of the Following Statements Is LEAST-Likely True

Which of the following statements is LEAST-Likely true?

A) Modern engines use premium piston rings that will not accommodate a worn cylinder bore.
B) If new rings are installed in a cylinder with a ring ridge, the new square ring will strike the rounded edge of the ring ridge and possibly break a piston land.
C) In many areas, laws give the customer the right to inspect all old parts.
D) Main and rod caps are interchangeable.