Refer to the Given Figure, an Isosceles Triangle with AB $\triangle \mathrm { ABC } = 47 \mathrm {~m}$

Multiple Choice

Refer to the given figure, an isosceles triangle with AB = AC.
-If the perimeter of $\triangle \mathrm { ABC } = 47 \mathrm {~m}$ , and $\mathrm { BC } = 11 \mathrm {~m}$ , what is the length $\mathrm { AC }$ ?

A) $11 \mathrm {~m}$
B) $18 \mathrm {~m}$
C) $45 \mathrm {~m}$
D) $36 \mathrm {~m}$