A patient has an illness that typically lasts about 24 hours. The temperature, (t), in degrees Fahrenheit, of the patient (t) hours after the illness begins is given by: (t(t) = -0.019t² + 0.475t + 99). What is the temperature 12 hours after the illness begins?
a. 98.3°F
b. 100.1°F
c. 101.7°F
d. 103.5°F