For a particle executing simple harmonic motion, match the following statements (conditions) from column I to statements (shapes of graph) in column II.

a-iv, b- i, c-ii, d-iii
a-iii, b-i, c-ii, d-iv
a-iii, b-ii, c-i, d-iv
a-iv, b-ii, c-i, d-iii
Two simple pendulums having lengths $l_{1}$ and $l_{2}$ with negligible string mass undergo angular displacements $\theta_{1}$ and $\theta_{2}$, from their mean positions, respectively. If the angular accelerations of both pendulums are same, then which expression is correct?
