The correct option is D Assertion is incorrect but Reason is correct
A is false but R is true.
Clause (3) of Article 20[i] of the Indian Constitution, 1950 provides that "No person accused of any offence shall be compelled to be a witness against himself," This principle is espoused on the maxim "nemo teneteur prodre accussare seipsum", which essentially means "NO MAN IS BOUND OF ACCUSE HIM".
However, there is exceptions to this provision. It follows that giving thumb impressions, or impression of foot or palm of fingers or specimens of writings or exposing body for the purpose of identification are not covered by the expression 'to be a witness' under Article 20(3).