For a simple pendulum of length 'L,' what is the maximum angular displacement, and what is the maximum kinetic energy at the maximum displacement?
a) Maximum angular displacement = π/2, Maximum kinetic energy = mgl
b) Maximum angular displacement = π, Maximum kinetic energy = mgl
c) Maximum angular displacement = 2π, Maximum kinetic energy = mgl
d) Maximum angular displacement = π/4, Maximum kinetic energy = mgl/2