What is the Molecular Formula of Arachidic Acid

Question

What is the molecular formula of arachidic acid?
A) CH3(CH2)15COOH
B) CH3(CH2)18COOH
C) CH3(CH2)10COOH
D) CH3(CH2)14COOH

Accepted Answer

Arachidic acid is a saturated fatty acid with the molecular formula C20H40O2, which corresponds to CH3(CH2)18COOH.