If the parabola y2 = 4ax passes through the point (3, 2), then the length of its latus rectum is
A. 2/3
B. 4/3
C. 1/3
D. 4
Option (b) is correct.
Parabola y2=4ax, passes through the point (3,2)
4=4a(3)
a=1/3
Length of latus rectum 4a=4/3