Base strength of :

Question

(a) $H_3CC^{\ominus}H_2$,

(b) $H_2C=C^{\ominus}H\: and$

(c) $H-C \equiv C^{\ominus}$

is in the order of :

$\begin {array} {1 1} (1)\;(a)>(b)>(c) & \quad (2)\;(b)>(a)>(c) \\ (3)\;(c)>(b)>(a) & \quad (4)\;(a)>(c)>(b) \end {array}$