In Recent Years, 30% of the Patent Applications Submitted to the US

Multiple Choice

In recent years, 30% of the patent applications submitted to the US Patent Office have been approved.Assuming that this same rate holds in the future, if 15 new applications are submitted this year, how likely is it that between 11 and 13 (inclusive) applications will be disapproved?

A) .4093
B) .4802
C) .5198
D) .3557
E) .6455