Assume that S&P500 Index Futures trade at 4200 pointsOne contract of S&P 500 futures has the monetary value computed as the Index value this case 4200) times $50, Assume that S&P500 goes down to 4150 what is the gain (or loss) for somebody who holds a short position?

A) 50 loss

B) 50 gain

C) 2500 loss

D) 2500 gain