Function f approximately represents the trajectory of an airplane in an air show, where x is the horizontal distance of the flight, in kilometers. determine the symmetry of the function. a. the trajectory of the airplane is symmetric about the line x = 1.5 km, which indicates that the height of the airplane when it moves a horizontal distance of 0.5 km is the same as the height of the airplane when it moves a horizontal distance of 2.5 km. b. the trajectory of the airplane is not symmetric. c. the trajectory of the airplane is symmetric about the line x = 102 km, which indicates that the height of the airplane when it moves a horizontal distance of 101 km is the same as the height of the airplane when it moves a horizontal distance of 103 km. d. the trajectory of the airplane is symmetric about the line x = 2 km, which indicates that the height of the airplane when it moves a horizontal distance of 1 km is the same as the height of the airplane when it moves a horizontal distance of 3 km.