An investor is bullish in XYZ stock. He decides to buy on margin $1,000$ shares at market price of $$50\mathrm{.}00.$ The initial margin is $60\%,$ and the maintenance margin is $30\%.$ Margin loan has $5\%$ interest rate per year. How much loan does the investor have to take initially for this transaction? Ans.: $$\_\_\_\_\_\_\_.$

A$)$ $$20,000$

B$)$ $$24,000$

C$)$ $$30,000$

D$)$ $$25,000$