Deposits of$$ $$1500$ are made every $3$ months starting$$ today, October$5,2006.$ The final deposit is made on January$5,2011.$ If the fund earns j$4=8\%,$ how much is in the fund immediately after the deposit on January$5,2011?$

I calculated using the future annuity formula and I$\text{'}$m having trouble figuring out how I would get n$=18.$

A$.$ $$32,118\mathrm{.}47$

B$.$ $$30,618\mathrm{.}47$

C$.$ $$34,260\mathrm{.}84$

D$.$ $$30,018\mathrm{.}11$