Problem: According to one Harvard study, it's common four married people to catch cancer in its earlier stages and to live longer after diagnosis. a. According to one Harvard study, it's common for married people to catch cancer in it's earlier stages and to live longer after diagnosis. b. According to one Harvard study, it's common four married people to catch cancer in its earlier stages and to live longer after diagnosis. c. According to one Harvard study, it's common for married people to catch cancer in its earlier stages and to live longer after diagnosis.