Reason (R) : They may contain polycyclic aromatic hydrocarbons (PAHs).
A. Both (A. and (R) are correct and (R) is the correct explanation of (A).
B. Both (A) and (R) are correct but (R) is not the correct explanation of (A).
C. (A) is correct, but (R) is false.
D. (A) is false, but (R) is correct.
Answer:A
Reason (R) : They may contain polycyclic aromatic hydrocarbons (PAHs).
A. Both (A. and (R) are correct and (R) is the correct explanation of (A). B. Both (A) and (R) are correct but (R) is not the correct explanation of (A). C. (A) is correct, but (R) is false. D. (A) is false, but (R) is correct.