Assume That When a Supermassive Black Hole Accretes Gas,approximately 50 $\odot$

Assume that when a supermassive black hole accretes gas,approximately 50 percent of its mass is converted directly into energy,which is radiated away.If a quasar has a luminosity of 10¹⁴ L _$\odot$ then what must its mass accretion rate be?

A) 1 M _$\odot$ per year
B) 10 M _$\odot$ per year
C) 1 M _$\odot$ per century
D) 10 M _$\odot$ per million years