Michael wants to buy $20,000 of securities in her margin account. Her advisor has informed her that she must pay a minimum of $14,000 in cash and maintain a minimum equity position of 40 percent. The initial margin requirement is percent and the maintenance margin is percent. \begin{tabular}{l} \hline 70;40 \\ \hline 70;30 \\ \hline 60;40 \\ \hline 30;30 \\ \hline 30;70 \end{tabular}