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
In the given circuit, the electric currents through $15\, \Omega$ and $6 \, \Omega$ respectively are

