$10.$ In the production of bleaching powder, the reaction between $\_($a$)\_$ and chlorine gas results in the formation of $\_($b$)\_$ and $\_($c$)\_$

$-($a: Calcium hydroxide, Sodium hydroxide, Magnesium hydroxide$)$

$-($b: Calcium hypochlorite, Sodium chloride, Calcium carbonate$)$

$-($c: Water, Calcium chloride, Calcium carbonate$)$