The springs in fig. A and \( \mathrm{B} \) are identical but length...

The springs in fig. A and \( \mathrm{B} \) are identical but length in \( \mathrm{A} \) is three times each of that in \( \mathrm{B} \). The ratio of period \( T_{A} / T_{B} \) is
(A) \( \sqrt{3} \)
(B) \( 1 / 3 \)
(C) 3
(D) \( 1 / \sqrt{3} \)