On a Cold Winter Day,the Outside Temperature Is -20°C and the Inside

On a cold winter day,the outside temperature is -20°C and the inside temperature is maintained at 20°C.There is a net thermal energy flow to the outside through the walls,roof,etc.,of 25 kW.At what rate is the entropy of the air outside the house changing as a result of this process?

A) +13 W/K
B) -25 W/K
C) 85 W/K
D) +99 W/K
E) 0 W/K