$\gamma$ - And $\delta$ -Hydroxy Acids Can Be Esterified Intramolecularly to Form Compounds Known

$\gamma$ - And $\delta$ -hydroxy acids can be esterified intramolecularly to form compounds known as which of these?

A) Anhydrides
B) Cycloalkenes
C) Lactones
D) Lactams
E) Cyclic ketones