GRE Reading Comprehension: ETS-GRE阅读ETS - FK01C021BN718JR97

The passage implies that if the Watanabe rabbits had had as many LDL receptors on their livers as do normal rabbits, the Watanabe rabbits would have been A. less likely than normal rabbits to develop heart disease B. less likely than normal rabbits to develop high concentrations of cholesterol in their blood C. less useful than they actually were to scientists in the study of familial hypercholesterolemia in humans D. unable to secrete VLDL's from their livers E. immune to drugs that lower cholesterol levels in people with certain forms of familial hypercholesterolemia