The profit function is given by the difference between revenue and cost.$($a$)$ What is the general form of the cost function?$($b$)$ What is the general form of the Revenue function?C$($q$)-$ cost functionR$($q$)-$ revenue function$9-$ quantity of goodb$-$ fixed costsm $-$ variable costsp $-$ price charged to student Choose the correct answer. $($a$)$ C$($a$)=$ pa; $($b$)$ R$($a$)=$ b ma $($a$)$ C$($a$)=$ ma; $($b$)$ R$($a$)=$ pa $($a$)$ C$($a$)=$ b ma; $($b$)$ R$($a$)=$ pa