(A) Helium is present in radio active minerals like pitchblende, monazite and clevite
(R) The main commercial source of helium is natural gas

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true and (R) is not the correct explanation of (A)
C. (A) is true but (R) is false
D. Both (A) and (R) are false

Answer

B