In a Wind Tunnel the Pressure on the Top Surface

Multiple Choice

In a wind tunnel the pressure on the top surface of a model airplane wing is 8.8 *104 N/m and the pressure on the bottom surface is 9.0 * 104 N/m². If the area of the top and bottom surfaces of each wing is 2.0 m², what is the total lift on the model airplane?

A) 2.0 *103 N
B) 8.0 * 103 N
C) 1.6 * 104 N
D) 3.6 * 104 N
E) 1.0 * 103 N