Some Animals Use Brown Fat as a Source of Heat

Multiple Choice

Some animals use brown fat as a source of heat generation. Which of the following statements about brown fat is false?

A) Brown fat is involved in nonshivering thermogenesis.
B) The protein thermogenin in brown fat is involved in uncoupling proton movement from ATP production.
C) Brown fat is found in endotherms.
D) Brown fat is highly vascularized.
E) Brown fat cells contain few mitochondria