If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit length over the entire span__________________?

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If a three hinged parabolic arch, (span l, rise h) is carrying a uniformly distributed load w/unit length over the entire span__________________?

A. Horizontal thrust is wl2/8h
B. S.F. will be zero throughout
C. B.M. will be zero throughout
D. All the above