Which sentence is correctly punctuated?

AWasps, ticks, and mosquitoes, are pests I hope to avoid when camping.

BWasps ticks and mosquitoes are pests I hope to avoid when camping.

CWasps, ticks and mosquitoes are pests I hope to avoid when camping.

DWasps, ticks, and mosquitoes are pests I hope to avoid when camping.

D?