The work and heat transfer per degree of temperature change for a closed system is given by $$\frac{dW}{dT} = \frac{1}{20}  kJ/^\circ C ; \frac{dW}{dT} = \frac{1}{10} kJ/^\circ C$$; what is the change in internal temperature (in KJ ) as the temperature increases from $$160^\circ  to  350^\circ$$ C ?

A

0

B

9.5

C

19

D

20