Dry Areas of the Skin Such as the Inner Forearm

Multiple Choice

Dry areas of the skin such as the inner forearm are seen to contain the most diverse populations of microbes.Suggest a reason why this is observed: (Select all that apply)

A) Increased exposure to atmospheric microbes which may vary with geographical location
B) Maximum oil production occurs in this region
C) A mix of hair,sweat and sebaceous gland environments exist here
D) The environment is less salty than others on the skin
E) All are plausible explanations for the observation