Choose the correct alternative from the following :
Assertion (A) : DDT has nowadays lost its use as an insecticide.
Reason (R) : DDT is harmful to man.
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 the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
E. Both A and R are false
Answer: B . Both A and R are true but R is NOT the correct explanation of A.
DDT has lost its use as a insecticide because insects have developed immunity against it.
However, it is true that DDT is harmful to man.