Please help !

Which statement is true?(1 point)

A )Endotherms cannot insulate their bodies and can only self-regulate their body temperature involuntarily.

B )Endotherms can insulate their bodies but can only self-regulate their body temperature voluntarily.

C) Ectotherms cannot insulate their bodies and can only self-regulate their body temperature voluntarily.

D )Ectotherms can insulate their bodies and can self-regulate their body temperature voluntarily and involuntarily.

Endotherms are defined as warm-blooded animals that have the ability to maintain their body temperature independent of the external environment, such as birds while ectotherms are the animals that are unable to control their body temperature.

Endotherms are able to insulate their bodies and self-regulate their body temperature voluntarily by increasing their internal metabolic heat production that keeps the body temperature constant.

Hence, the correct option is "B. "