Caf$$ Tropical is a local restaurant specializing in tropical cuisine. Among its various Hawaiian$-$themed menu item is the popular "Surprise$-$Me$-$Smoothie." The smoothies are sold to regular customers at a price of $$6\mathrm{.}50$ per smoothie. The caf$$ typically sells $40$ smoothies during breakfast. At this quantity, the smoothies cost the caf$$ $$2\mathrm{.}50$ each to make $-$$$2\mathrm{.}00$ of the cost is variable and $$0\mathrm{.}50$ of the cost is fixed. The restaurant is currently operating at $80\%$ capacity during the breakfast hour. The only menu item offered during breakfast is the smoothie.

The caf$$ is considering accepting a special catering order for their "Surprise$-$MeSmoothie" from the Jazzagals before they depart for their a cappella competition. The Jazzagals will need the smoothies ready for breakfast, one of the caf$\text{'}$s busiest times. The Jazzagals need $30$ smoothies and would like a discounted price of $$4\mathrm{.}50$ per smoothie because of the quantity.

What will be the effect on operating income if Caf$$ Tropical accepts the specialorder?

Increase of $$75$

Increase of $$15$

Increase of $$25$

Decrease of $$15$

Decrease of $$20$