A 100 M² Area Wall Is Constructed of Three Layers

A 10.0 m² area wall is constructed of three layers. The first layer is 2.00 cm thick and has a thermal conductivity 0.500 W/m∙K. The second layer is 15.0 cm thick and has a thermal conductivity 0.100 W/m∙K. The third layer is 3.00 cm thick and has a conductivity 1.00 W/m∙K. How much heat flows through this wall per hour if one side of the wall is at 20.0°C and the other side is at 0.00°C?

A) 3.22 × 10⁵ J
B) 1.73 × 10⁵ J
C) 4.59 × 10⁵ J
D) 1.14 × 10⁵ J
E) 2.68 × 10⁵ J