The shadow of a candle fell on the table and made a right angled triange with an angle of elevtion of `60^@` from the surface of the table to the upper tip of the flame of the candle. If the length of the candle is 21 cm, how long is the tip of the shadow on the table away from the base of candle?

Options

A. `2sqrt3`m
B. `4sqrt3m`
C. `sqrt(3)/2`m
D. `7sqrt3`m