A 51.81g sample of a substance is initially at 26.8°C. after absorbing 2431 J of heat, the temperature of the substance is 191.9°C. What is the specific heat (c) of the substance?

a) 0.463 J/g°C
b) 0.850 J/g°C
c) 1.32 J/g°C
d) 2.50 J/g°C