Walgreen Company (NYSE: WAG) is currently trading at $48.50 on the NYSE. Walgreen Company is also listed on NASDAQ and assume it is currently trading on NASDAQ at $48.75. Does an arbitrage opportunity exists and if so how would you exploit it and how much would you make on a block trade of 100 shares?

A.) No, no arbitrage opportunity exists.

B.) Yes, buy on NASDAQ and sell on NYSE, make $25.

C.) Yes, buy on NYSE and sell on NASDAQ, make $25.

D.) Yes, buy on NASDAQ and sell on NYSE, make $250.