12 points! Please Help!
Angle PQR is rotated 90 degrees counterclockwise about the origin to form angle P′Q′R′. Which statement shows the measure of angle P′Q′R′?
A m∠P′Q′R′ = 90 degrees
B m∠P′Q′R′ = 180 degrees
C m∠P′Q′R′ = m∠PQR
D m∠P′Q′R′ = 2 ⋅ m∠PQR