An investor has a portfolio consisting of 200 put options on stock A, with a strike price of 40, and 10 shares of stock A. The investor can write put options on stock A with a strike price of 35. The deltas and gammas of the options are as follows: 35-strike put option: A = -0.1, T = 0.50 40-strike put option: A = -0.05, T = 0.25 What position would you take to make the portfolio both delta and gamma neutral