Chris and Agnishom are playing a game of stones. There are two piles of stones, each with a positive number of stones. Each player takes turns taking any positive amount of stones from only one of the two piles. The player who takes the last stone wins.

Provided that the situation allows, what strategy should Chris follow to win the game?

A. Always take 1 stone from the larger pile.

B. Always take a positive amount of stones from the larger pile until it is 1 more than the smaller pile.

C. Always take a positive amount of stones from the larger pile until it's the same as the smaller pile.

D. Always take a positive amount of stones from the larger pile until it is 1 less than the smaller pile.

E. Always take 1 stone from the smaller pile.

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