A distributed load is applied on a simply supported beam. Which statement is correct according to the relations among the distributed load intensity, the shearing force and the bending moment?

A、Theshearingforcediagramisahorizontalstraightlineandthebendingmomentdiagramisaparaboliccurve.;
B、Theshearingforcediagramisaparaboliccurveandthebendingmomentdiagramisahorizontalstraightline.;
C、Theshearingforcediagramisainclinedstraightlineandthebendingmomentdiagramisaparaboliccurve.;
D、Theshearingforcediagramisaparaboliccurveandthebendingmomentdiagramisainclinedstraightline.