Suzanne Uses a Diaphragm, and After Having a Steamy Encounter

Suzanne uses a diaphragm, and after having a steamy encounter with a man at a party, she does not want to risk a pregnancy from a one-night-stand. She decides to leave her diaphragm in place for a couple days. Which of the following is a possible result of this decision?

A) She will likely avoid pregnancy because the spermicide used with the diaphragm continue to kill sperm over time.
B) She is putting herself at risk of toxic shock syndrome by leaving the diaphragm in too long.
C) She may inadvertently increase her chances of pregnancy by failing to remove the man's ejaculate with the diaphragm immediately after intercourse.
D) Her decision is not what doctors recommend, but it may offer her psychological comfort and is harmless.