Masters and Johnson's Approach to Sex Therapy Has Been Critiqued

Masters and Johnson's approach to sex therapy has been critiqued for which of the following reasons?

A) For focussing on unconscious desires that weren't directly measurable or observable
B) For focussing on the couple as a pair instead of on each individual with their own individual problems
C) For having sexual penetration as the goal of the therapy
D) For defining sexual functioning as a matter of subjective experience and not biology