The United States Postal Service charges an extra $\$0.11$ in postage if the length of an envelope, in inches, divided by its height, in inches, is less than $1.3$ or greater than $2.5.$ For how many of these four envelopes must the extra $\$0.11$ in postage be paid?\begin{tabular}[t]{ccc} Envelope & Length in inches & Height in inches\\\hline A &6 &4\\ B &9 &3\\ C &6 &6\\ D &11 &4 \end{tabular}
