A simply supported beam PQ is loaded by a moment of 1 kN-m at the mid span of the beam of length 1 m. The reaction forces $$R_p and R_q$$ at supports P and Q respectively are

A

1 kN downward, 1 kN upward

B

0.5 kN upward, 0.5 kN downward

C

0.5 kN downward, 1 kN upward

D

0.5 KN upward, 0.5 kN upward