This diagram shows a flag. The flag has lines that form several angles.

A rectangle with a P-U diagonal from the top left to the bottom right. The lines from the bottom left vertex Q meet the diagonal P-U at the points R, S, T. Angle P-Q-R measures 25 degrees, R-Q-S measures 30 degrees, S-Q-T measures 25 degrees, T-Q-U measures 10 degrees.

Which equation can be used to find the measure of ∠RQT ?

A.
25° + 10° = □
B.
30° – 25° = □
C.
25° – 10° = □
D.
30° + 25° = □