What type of fatty acids are present in vegetable ghee and coconut oil,respectively?

Following are the statements with reference to 'lipids'.
$(a)$ Lipids having only single bonds are called unsaturated fatty acids.
$(b)$ Lecithin is a phospholipid.
$(c)$ Trihydroxy propane is glycerol.
$(d)$ Palmitic acid has $20$ carbon atoms including carboxyl carbon.
$(e)$ Arachidonic acid has $16$ carbon atoms.
Choose the correct answer from the options given below.

What is lecithin?

Fat is present in large quantities in the tissues of which of the following?

What is obtained upon the hydrolysis of the given molecule?

Which of the following is not a type of simple lipid?