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
- $\dfrac{ML^2}{2EI} \\$
- $\dfrac{ML^2}{EI} \\$
- $\dfrac{2ML^2}{EI} \\$
- $\dfrac{4ML^2}{EI}$