Assertion (A): A negligible proportion of the people of the hot desert regions of the world re engaged in industrial pursuits.
Reason (R) : Those regions are very poorly endowed with mineral and / or energy resources.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true