Directions: In the following question, two words indicated by I and II have been left out. The correct word to come in place of I is given as one of the four alternatives against I and the correct word to come in place of II is given as one of the four alternatives against II. Read with the correct words, there is some relation between the two words to the left of the sign (::) and the same relation retains between the two words to the right of the sign (::). The correct combination is given as one of the four alternatives (a), (b), (c), and (d). Find the correct combination.

I : Ocean :: Stone : II

I. [A] Glacier [B] Lake [C] Continent [D] River II. [P] Rock [Q] Pebble [R] Granite [S] Mountain