Công thức tính nhiệt lượng q theo nhiệt dung riêng trung bình (left. c

A. \(q = \left. c \right|_{{t_1}}^{{t_2}}*({t_2} - {t_1})\)

B. \(q = \frac{{\left. c \right|_0^{{t_2}}*{t_2} - \left. c \right|_0^{{t_1}}*{t_1}}}{{{t_2} - {t_1}}}\)

C. \(q = \frac{{\left. c \right|_0^{{t_1}}*{t_1} - \left. c \right|_0^{{t_2}}*{t_2}}}{{{t_1} - {t_2}}}\)

D. \(q = \left. c \right|_0^{{t_1}}*{t_1} - \left. c \right|_0^{{t_2}}*{t_2}\)