The function f(t) = 33 sin (pi over 2t) − 20 models the temperature of a periodic chemical reaction where t represents time in hours. what are the maximum and minimum temperatures of the reaction, and how long does the entire cycle take?

maximum: 53°; minimum: −13°; period: 4 hours

maximum: 33°; minimum: 20°; period: pi over 2 hours

maximum: 13°; minimum: −53°; period: 4 hours

maximum: 35°; minimum: 35°; period: 8 hours