(A) Alumina has hgih condutivity
(R ) The mixture of alumia and cryolite is used for electrolytic reduction in order to extract aluminium

Options

A. S-I and S-II are true and S-II explains S-I
B. S-I and S-II are true and S-II does not explains S-I
C. S-I is true S-II is false
D. S-I is false S-II is true

Answer

D