$10\mathrm{.}4$C When a hydraulic jump occurs in a channel,

a$)$ the energy of the flow upstream and that downstream of the jump are equal.

b$)$ the depth of the flow upstream and that downstram of the jump are equal.

c$)$ the momentum of the flow upatream and that downstream of the jump are equal.

d$)$ the Froude number of the flow upstream and that downstream of the jump are equal.