Assertion (A): Nitric acid and water form a maximum boiling azeotrope.
Reason (R): Azeotropes are binary mixtures having the same composition in the liquid and vapor phases.
a) Both assertion and reason are true, and the reason is the correct explanation of the assertion.
b) Both assertion and reason are true, but the reason is not the correct explanation of the assertion.
c) Assertion is true, but the reason is false.
d) Assertion is false, but the reason is true.