Change in entropy during constant pressure process is given by the relation
(a) $$mC_p \log_e \frac{T_1}{T_2}$$
(b) $$mC_p \log_e \frac{T_2}{T_1}$$
(c) $$mC_v \log_e \frac{T_2}{T_1}$$
(d) $$m\frac{R}{J} \log_e \frac{T_2}{T_1}$$

A

(a) only

B

(b) only

C

(c) only

D

(d) only