A cold liquid enters a counter flow heat exchanger at 15 deg at a rate of 8 $$\frac{kg}{s}$$. A hot stream of the same liquid enters the heat exchanger at 7 deg at 2 $$\frac{kg}{s}$$ Assuming the specific heat of the fluid as 4 $$\frac{kJ}{kg}.^\circ$$C, determine the maximum heat transfer rate.

A

960 kW

B

240 kW

C

1920 kW

D

480 kW