Eiffel's Caf$$ bakes croissants that are sold to local restaurants and grocery stores in the Athens, Georgia area. When $620$ croissants are baked, the average cost is $$0\mathrm{.}70.$ When $744$ croissants are baked, the average cost is $$0\mathrm{.}65.$ What is the total cost when $680$ croissants are baked?

$($Hint: Find the TOTAL COST corresponding to each average cost. Then use the High$/$Low Method to get the Total Cost Function.$)$

A$.$ $$578.$

B$.$ $$598.$

C$.$ $$458.$

D$.$ $$542.$

E$.$ $$510.$

A

B

C

D

E