People who have a college degree tend to live longer than those who do not have a college degree. This is true for both men and women, and it is true across many different ethnicities and in many different geographical regions. This phenomenon is easily explained because it has been proven that people who have attended college have lifestyles and habits that are well known to increase lifespan: they eat balanced meals, they exercise often, they consider themselves happy, and they tend to have strong relationships. Therefore, if you want to have a longer lifespan, you should get your college degree.Which of the following, if true, weakens the argument above?a) Some people who attend college do not get their college degree.b) People with those four habits and lifestyles are more likely to go to college than those without them.c) People with college degrees tend to have more heart attacks than those without one.d) Women tend to live much longer than men do.e) People from certain geographical regions and certain ethnicities tend to have longer lifespans.