when passing through an abrupt wind shear which involves a shift from a tailwind to a headwind, what power management would normally be required to maintain a constant indicated airspeed and ils glide slope? a. higher than normal power initially, followed by a further increase as the wind shear is encountered, then a decrease. b. lower than normal power initially, followed by a further decrease as the wind shear is encountered, then an increase. c. higher than normal power initially, followed by a decrease as the shear is encountered, then an increase.