A year ago, you purchased $200$ shares of Walgreens Boots Alliance, Inc. on margin at

$$24\mathrm{.}08$ per share. The initial margin is $60\%,$ the maintenance margin requirement

$30\%,$ and the broker charges $7\mathrm{.}5\%$ interest on the margin loan. Since then, the firm

paid $$1\mathrm{.}00$ per share in dividends. You will receive a margin call if the stock price falls

below

$$12\mathrm{.}67$

$$13\mathrm{.}24$

$$14\mathrm{.}79$

$$15\mathrm{.}73$