The correct option is B Simple alveolar
Alveolar glands have a saclike secretory portion, thus are also termed saccular glands. They typically have an enlarged lumen (cavity), hence the name is similar to alveoli. Simple alveolar glands, such as oil glands in the skin, a meibonian gland in eyelids and cutaneous glands in frog's skin are simple alveolar glands. So, the correct answer is option B.