You purchased $200$ shares of a stock trading at $$45$ per share and used $$6,000$ of your own money and borrowed the rest. If the maintenance margin is $30\%,$ how low can the stock go before you receive a maintenance call?

Group of answer choices

c$.$ $$40\mathrm{.}55$

d$.$ $$36\mathrm{.}25$

b$.$ $$33\mathrm{.}75$

a$.$ $$21\mathrm{.}43$