Triangle P Q R is shown. Angle P Q R is a right angle. The length of Q R is p, the length of R P is q, and the length of P Q is r. Which sine ratios are correct for ΔPQR? Check all that apply. 
A. sin (P) = StartFraction r Over q EndFraction 
B. sin (P) = StartFraction p Over q EndFraction 
C. sin (Q) = StartFraction r Over p EndFraction 
D. sin (R) = StartFraction q Over r EndFraction 
E. sin (R) = StartFraction r Over q EndFraction