Which of the Following Results Would Provide Support for the Thrifty

Which of the following results would provide support for the thrifty genotype hypothesis?

A) Alleles involved in the development of diabetes show signatures of positive selection in the past.
B) Mice with diabetes reproduce less under conditions of persistent food stress.
C) Genome sequencing of 60,000-year-old human fossils reveals that alleles linked with diabetes were at a lower frequency in the past.
D) all of the above
E) none of the above