Compare Quantity A and Quantity B, using additional information centered above the two quantities if such information is given, and select one of the following four answer choices:
(A) Quantity A is greater.
(B) Quantity B is greater.
(C) The two quantities are equal.
(D) The relationship cannot be determined from the information given.
A symbol that appears more than once in a question has the same meaning throughout the question.
For three angles $A$, $B$, and $C$, $A$ and $B$ are complementary angles, $B$ and $C$ are supplementary angles, and $m \angle A < m \angle B$.
Quantity A: $m \angle B$
Quantity B: $m \angle C$