Today is $1/7/2021,$ John plans to deposit $$500$ at the beginning of each month into an investment fund. The first deposit will be deposited today. John predicts that the return rate of this fund will be j$2=3\mathrm{.}2\%$ from $1/7/2021$ to $30/9/2021$ and j$2=4\mathrm{.}83\%$ from $1/10/2021$ to $31/12/2021.$ What will be balance amount of this account on $31/12/2021?$ Round your answer to three decimal places.

Question $11$ Answer

a$.$

$3037\mathrm{.}527$

b$.$

$3038\mathrm{.}404$

c$.$

$3038\mathrm{.}048$

d$.$

$3039\mathrm{.}408$