Since the Early 1970s, How Have House Committee Chairs Been

Since the early 1970s, how have House committee chairs been selected?

A) By a seniority system, although with leadership able to veto selections
B) By a consensus of the House leadership, with seniority still mattering most
C) By an election among members of the full legislature, with seniority playing a backseat to qualification and popularity among lawmakers
D) By an election among the members of the majority party, but with senior members still most likely to win selection