Question $7(1$ point$)$

What regular investment, made at the end of every three months and earning $10\%$ compounded quarterly, would accumulate to $$475,000$ in $20$ years?

a $,$$$7,856\mathrm{.}83$

b $$17,616\mathrm{.}21$

c $$3,492\mathrm{.}86$

d $,$$$1,912\mathrm{.}37$

e $,$$$7,916\mathrm{.}67$