Who Among the Following Is Most Likely to Be Straight?​

Who among the following is most likely to be straight?​

A) Perry, a woman in her forties, who has been dating Sarah, a young woman, for two years
B) Helen, a young woman, who enjoys sexual intimacy with both men and women
C) Kate, a woman, who is sexually attracted to her female colleague Veronica
D) Ricky, a man in his fifties, who is sexually attracted only to young women