The increasing order of nucleophilicity of the following nucleophiles is :
(a) CH3CO2Θ (b) H2O (c) CH3SO3Θ (d) ΘOH
b < c < a < d
a < d < c < b
d < a < c < b
b < c < d < a
A.
H2O < CH3SO3-2< CH3CO2-<ŌH