A$)$ Find XI $($see the similar examples$)$ of the note if you do not know what X$1,$ X$2$ are$)-$ XI is associated with the unit moment at B$.$

B$)$ Find X$2.$ Note: X$2$ is associated with the unit moment at C$.$ C$)$ Based on X$1$ and X$2$: Find Rx $($Horizontal reaction at A$)$

Based on XIand X$2$: Find Ry $($Vertical reaction at A$)$