38. The wing of an airplane has an area of 1 m2, and its wing thickness is 0.5 m. Air flows over the top at 20 m/s and under the wingat 10 m/s. The density of air is 1.2 kg/m3. What is the net force on the wing due to Bernoulli effect?(Gravitational acceleration g = 10 m/s2)
(A) 12 N
(B) 15 N
(C) 18 N
(D) 183 N
(E) 186 N