A simple pendulum has a length, l. The inertial and gravitational masses of the bob are m₁ and m₂ respectively. Then, the time period, T, is given by

A. T = 2π√((m₂l)/(m₁g))
B. T = 2π√((m₁l)/(m₂g))
C. T = 2π√(m₁m₂ l/g)
D. T = 2π√(l/m₁ m₂g)