Two airplanes are flying in the air at the same height. Airplane A is flying east at 427 km/h and airplane B is flying north at 773 km/h. If they are both heading to the same airport, located 73 kilometers east of airplane A and 72 kilometers north of airplane B, at what rate is the distance between the airplanes changing? a. 1693.6414 km/h O b. -846.8207 km/h O c. -238.8013 km/h O d. 846.8207 km/h O e. 238.8013 km/h O f. -477.6027 km/h Clear my choice