Using the carbon$-$containing starting material$($s$),$ propose a synthesis for both of the following retrosynthesis schemes. Provide structures for all intermediates. The carbon atoms in the product must originate from the starting material$($s$),$ but you may use as many equivalents of each starting material as you would like, and any reagent$/$reaction you know. $($Note: no mechanisms are required$).$

$($A$)$