Dr. Z: Many of the characterizations of my work offered by Dr. Q are imprecise, and such characterizations do not provide an adequate basis for sound criticism of my work. Which one of the following can be properly inferred from Dr. Z's statement? ["Some of Dr. Q's characterizations of Dr. Z's work provide an adequate basis for sound criticism of Dr. Z's work.", "At least one of Dr. Q's characterizations of Dr. Z's work fails to provide an adequate basis for sound criticism of that work.", "All of Dr. Q's characterizations of Dr. Z's work that are not imprecise provide an adequate basis for sound criticism of Dr. Z's work.", "If the characterization of someone's work is precise, then it provides a sound basis for criticizing that work."]