Refer to This Figure to Answer the Question $\angle F G L$

Multiple Choice

Refer to this figure to answer the question. Line DH is parallel to line IM. Line BO is perpendicular to line DH.
-Choose the true statement.

A) $\angle F G L$ and $\angle G L K$ are supplementary.
B) $\angle \mathrm { FGL }$ and $\angle \mathrm { LGH }$ are complementary.
C) $m ( \angle P L M ) + m ( \angle L G H ) = 180 ^ { \circ }$
D) $\mathrm { m } ( \angle \mathrm { LEF } ) = \mathrm { m } ( \angle \mathrm { LGH } )$