The discharge over a rectangular notch is determined by _____________________?

A. 2/3 cd. b (2 gh) 1/2
B. 2/3 cd. B (2g) 1/2 H
C. 2/3 cd. B (2g) 1/2 H3/2
D. 2/3 cd. b (2g) 1/2 H 5/2