What Might Be One Reason That Women Are Less Likely

What might be one reason that women are less likely than men to have heart attacks?

A) They are more likely to have a "tend and befriend" style in dealing with stress, which is thought to be better for the immune system.
B) The "women are wonderful" concept applies to heart disease.
C) Women have less testosterone than men, and testosterone causes heart attacks.
D) Women take fewer risks, and those risks often induce heart attacks in men.