This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Essential fatty acid present in breast milk which is required for normal growth of child
is: 
Select and explain. 
A. Lenoleic acid, B. Palmitic acid, C. Docosahexanoic acid, D. EPA
C: Docosahexanoic acid
Answer: C: Docosahexanoic acid 
Explanation: DOCOSA HEXAENOIC ACID (DHA)

Sources: Human milk, Fish liver oils, Algal oils
Synthesized in the body from α Linolenic acid.
Highest  concentration  of  DHA  found  in  retina,  cerebral  cortex, sperms.
Functions: Needed for the development of fetal brain and retina
DHA is supplied transplacentally and through breast milk.
Clinical significance: Low DHA is associated with increased risk of Retinitis Pigmentosa.