Assertion (A): There are twenty amino acids which occur in proteins. The chemical and physical properties of amino acids are essentially of the amino, carboxyl groups and the R functional groups.
Reason (R): Based on the number of amino and carboxyl groups there may be acidic, basic and neutral amino acids.
In the context of above statements, select the correct one:
1
Both (A) and (R) true and (R) is explanation of (A).
2
(A) is true but (R) is not necessarily true.
3
Both (A) and (R) are true. but (R) is not an explanation of (A).
4
(A) is true but (R) is false.