A Chemist Wishes to Calibrate a Bomb Calorimeter, So She

A chemist wishes to calibrate a bomb calorimeter, so she combusts 5.58 g of 4-pentenoic acid, Δ_combustionU = -26.77 kJ g^-1, which causes a temperature change from 23.4 °C to 38.9 °C. What should the chemist report for the value of C_cal?

A) 6.10 kJ °C^-1
B) 17.5 kJ °C^-1
C) 28.7 kJ °C^-1
D) 9.64 kJ °C^-1
E) 7.61 kJ °C^-1