Suppose you are the lead underwriter for a start$-$up company. The company plans to sell $10$ million shares at the price of $$46$ per share. It also provides you an over$-$allotment option of $1\mathrm{.}5$ million additional shares. Recent road show estimates demand to be around $20$ million shares at $$46.$ There is lots of uncertainty about how the stock will perform after trading starts. Consider the following decisions. $19.$ After trading starts, what will you do if the stock price increases to $$70?$ a$.$ Ask investors to buy shares from the market. b$.$ Sell shares back to the Issuing company. c$.$ Exercise Green shoe option. d$.$ Do nothing. e$.$ Ask investors to sell stock to depress stock price