Arguments by Analogy Are a "Relatively Weak Mode of Argument

Arguments by analogy are a "relatively weak mode of argument" because:

A) they rely on a generalization from a single example
B) they almost always produce false conclusions
C) it is never completely clear what the conclusion is intended to be
D) they rely on two things being similar, but no two things are ever like each other in any way
E) the similarity between A and B is never truly related to the predicate of the conclusion