Sensate Focus and Nondemand Pleasuring Were Designed by Masters and Johnson

Sensate focus and nondemand pleasuring were designed by Masters and Johnson (1970) to treat sexual dysfunctions.How did these techniques work?

A) primarily through increasing sexual desire and decreasing sexual performance
B) primarily through elimination of psychologically based performance anxiety
C) primarily through creating suspense and excitement in the sexual experience
D) primarily through improving a couple's sexual skills