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