Which of the Following Explanations Has the Most Logical Strength

Which of the following explanations has the most logical strength?

A) The Trudeaus financed the building of the new campground, since their baby had leukemia.
B) The low turnout for the grand opening of the art show means that Phil will be a plumber.
C) We bought a new kite string because the old one broke.
D) This house needs to be dusted weekly because we have a gas stove.
E) Since champion horses are expensive, the town will be able to renovate city hall.