Use Heron's Area Formula to Find the Area of the Triangle

Multiple Choice

Use Heron's area formula to find the area of the triangle pictured below, if $a = 8$ inches, $\mathrm { b } = 14$ inches, and $\mathrm { c } = 10$ inches.

A) $4 \sqrt { 6 }$
B) 40
C) 56
D) $12 \sqrt { 66 }$
E) $16 \sqrt { 6 }$