The caribou population in Denali National Park dropped from a high of 200,000 in 1943 to a low of 76,000 in 1989, and has risen some since. Scientist hypothesize that the population follows a sinusoidal cycle affected by predation and other environmental conditions, and that the caribou population will again reach its previous high. A. Letting t =0 in 1943, give a possible sinusoidal formula to describe the caribou population as a function of time. B. In what year does your model predict that the caribou population will next reach 200,000 again