A Mouse with an Ob/ob Genotype Lacks Functional Leptin

Multiple Choice

A mouse with an ob/ob genotype lacks functional leptin.A second mouse with a db/db genotype lacks functional leptin receptors.Both mice have been allowed to feed at will.It is most likely that

A) the ob/ob mouse will be obese and the db/db mouse will be thin.
B) the ob/ob mouse will be thin and the db/db mouse will be obese.
C) the ob/ob mouse will be obese and the db/db mouse will be a normal weight.
D) both the ob/ob mouse and the db/db mouse will be thin.
E) both the ob/ob mouse and the db/db mouse will be obese.