A $120/240-$volt, $1-$ph$,3-$wire service is to be installed to serve a $150-$Amp service. The conduit will have two ungrounded conductors and one grounded conductor. The ungrounded conductors will be $1/0$ AWG copper conductors. The load on the neutral will be $90$ amps $.$ The smallest neutral that can be installed is a $q,$ AWG conductor.

a$.3$

b$.\frac{2}{0}$

c$.\frac{1}{0}$

d$.4$

e$.8$