Deflection can be reduced by A. proving less restraints B. increasing

Deflection can be reduced by

A. proving less restraints

B. increasing span

C. increasing depth of beam

D. decreasing depth of beam

This question was addressed to me in an online quiz.

This is a very interesting question from Deflection & Holes in Beams topic in section Design of Beams of Design of Steel Structures

Right answer is C. increasing depth of beam

To explain I would say: Deflection can be reduced by increasing depth of beam, reducing the span, providing greater end restraints or by other means such as providing camber.