An error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.

•   An error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.
• A. 1%
• B. 1.5%
• C. 2%
• D. 2.5%