Please help me with these questions and answer them completely. Thank you very much!

Question 2 For European options, what is the effect of an increase in the volatility? A) Decrease the value of calls and puts, all else being equal. B) Increase the value of calls and puts, all else being equal. C) Decrease the value of calls, increase the value of puts, all else being equal. D) Increase the value of calls, decrease the value of puts, all else being equal. Question 1 You speculate that the will appreciate in the next 3 weeks. As a result, you buy a futures contract of 62,500 at $0.9/. The bank requires you to put an initial deposit of $5,625 which 10% of the contract size. You will get a margin call when your balance is below $2,000. At what settlement price will you get a margin call from the bank? A) $1.4640/ B) $1.1876/ C) $0.8420/ D) $0.6831/