$A$ heterogeneous group of compounds related to fatty acids is:

Camel stores which of the following in its hump?

Which group is absent in the structure of sterols?

Assertion $A$: Cholesterol is a lipid that does not contain fatty acids.
Reason $R$: Cholesterol does not contain a $-COOH$ or $>C=O$ group.
Which option is correct for Assertion $A$ and Reason $R$?

Which one of the following lipids is found in the myelin sheath of a neuron?

Assertion : Unsaturated fats are more reactive compared with the saturated fats.
Reason : Unsaturated fats have only single bonds in their structure.