C 
One ticket to a mini concert costs $\textbackslash$20$ at full price. Nicole buys $4$ tickets using a coupon that gives her a $25\textbackslash\%$ discount. Bel buys $5$ tickets using a coupon that gives her a $30\textbackslash\%$ discount. How many more dollars does Nicole pay than Bel? 
a: $$2$$ 
b: $$5$$ 
c: $$10$$ 
d: $$15$$ 
e: $$20$$ 