A cantilever beam of length $L$ is subjected to a moment $M$ at the free end. The moment of inertia of the beam cross section about the neutral axis is $I$ and the Young's modulus is $E$. The magnitude of the maximum deflection is

(A) $\frac{M L^{2}}{2 E I}$

(B) $\frac{M L^{2}}{E I}$

(C) $\frac{2 M L^{2}}{E I}$

(D) $\frac{4 M L^{2}}{E I}$

A cantilever beam of length $L$ is subjected to a moment $M$ at the free end. The moment of inertia of the beam cross section about the neutral axis is $I$ and the Young's modulus is $E$. The magnitude of the maximum deflection is

(A) $\frac{M L^{2}}{2 E I}$

(B) $\frac{M L^{2}}{E I}$

(C) $\frac{2 M L^{2}}{E I}$

(D) $\frac{4 M L^{2}}{E I}$

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