10. Which of the following functions is the inverse of the function {(1,2).(3,4).(6,8)) ? (1 point)
A. {(6,8).(3,4),(1,2))
B. {(2,1),(4,3).(6,8)}
C. {(2,1),(4,3), (8,6)
D. {(2,1),(3,4).(8.6)]