Determine the Principal That Must Be Invested at Rate R,compounded $\$ 900,000$

Multiple Choice

Determine the principal that must be invested at rate r,compounded monthly,so that $\$ 900,000$ will be available for retirement in t years.​ $r = 3 \frac { 1 } { 2 } \% , t = 15$ ​

A) $\$ 532,806.81$
B) $\$ 632,806.81$
C) $\$ 432,806.81$
D) $\$ 732,806.81$
E) $\$ 332,806.81$