The first Carnot engine work under temperature T1 and T2 and the second Carnot engine work under T2 and T3. Which is the same workout for the above mentioned Carnot engines?

A

$$T_2 = \frac{T_1 - T_3}{2}$$

B

$$T_1 - T_2 = T_2 - T_3$$

C

$$T_2 = \sqrt{T_1 \times T_3}$$

D

$$T_2 = 2(T_1 - T_3)$$