A solid cylinder with density $\rho_c$, cross-sectional area $A$ and length $X$ is completely immersed in a liquid of density $\rho_L$. The top face of the cylinder lies at a depth $H$ beneath the liquid surface, as illustrated. The acceleration of free fall is $g$. Which expression gives the magnitude of the upthrust force acting on the cylinder?
- A$\rho_c A H g$
- B$\rho_c A X g$
- C$\rho_L A H g$
- D$\rho_L A X g$