The Jamaicans' Success in the Recent Olympic Games

Multiple Choice

The Jamaicans' success in the recent Olympic games:

A) reflects hard work, a can-do mindset, and a national love of running.
B) has been traced to the ACTN3 allele, which is linked to the ability to more forcefully contract muscles and which only Jamaicans have.
C) is correlated to the vast financial wealth of the nation.
D) is due to heterogeneous nature of Jamaica's gene pool.
E) shows that the Jamaicans are genetically gifted.