What Is the Rate of Heat Flow Through a Pane

What is the rate of heat flow through a pane of glass that is 40.0 cm by 30.0 cm with a thickness of 4.00 mm when the outside temperature is -10.0°C and the inside temperature is 25.0°C? The thermal conductivity of glass is 0.105 W/(m∙K) and the specific heat of glass is 0.180 cal/(g∙°C) .

A) 24.2 W
B) 3.81 W
C) 18.6 W
D) 47.3 W
E) 110 W