Marler and Colleagues (1988, 1991, 1995) Described Research in Which

Marler and colleagues (1988, 1991, 1995) described research in which they implanted male spiny lizards (Scleroporus jarrovi) with testosterone-laden capsules in winter, a season during which testosterone levels are usually low. The implanted lizards

A) became very aggressive.
B) failed to eat or rest enough and died sooner than other males.
C) spent a great deal of time in territorial defense and vigorous displays.
D) all of the above.