A electric heater of exposed surface area 0.09 m$$^2$$ and output 600 watts is designed to operate fully submersed in water. When the water is at $$37^\circ C$$ and the surface coefficient of heat transfer is 285.3 W/m$$^2$$-deg C, surface temperature of the heater will be

A

$$30.5^\circ C$$

B

$$60.5^\circ C$$

C

$$90.5^\circ C$$

D

$$120.5^\circ C$$