Which wind-shear condition results in a loss of airspeed?
a. Decreasing headwind or tailwind
b. Increasing headwind and decreasing tailwind
c. Decreasing headwind and increasing tailwind
d. Increasing headwind or tailwind
a. Decreasing headwind or tailwind
b. Increasing headwind and decreasing tailwind
c. Decreasing headwind and increasing tailwind
d. Increasing headwind or tailwind