Three 1 kg samples of solids P, Q, and R are each warmed from 20 °C to 30 °C. The specific heat of P is twice that of Q and three times that of R. Which statement correctly compares the thermal energy required for the three samples?
a) Energy for Q equals energy for R, and both are less than the energy for P.
b) Energy for P > Energy for Q > Energy for R
c) All three samples require the same thermal energy because their temperature changes are the same.
d) Energy for R > Energy for Q > Energy for P