maximum vertical deflection of the beam

Question

A cantilever beam of length L, with uniform cross-section and flexural rigidity EI, is loaded uniformly by a vertical load w per unit length. The maximum vertical deflection of the beam is given by 

(a)                     (b)

(c)                      (d)

Answer 1

Given a cantilever beam of length L, with uniform cross-section and flexural rigidity EI,