In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Q: Problem: the angle of elevation of a ladder leaning against a wall is 60 and the foot of the ladder is 4.6 m away from the wall . the length of the ladder is :
Options: a ) 2.3 m , b ) 4.6 m , c ) 7.8 m , d ) 9.2 m , e ) 10.1
A:
d