An option trader buys 2 contracts of a call option on a stock. Each contract is on 100 shares of the stock. The delta of the call option is 0.3. If the trader delta-hedges his position, what should he do?

1) Buy 300 shares of stock

2) Buy 600 shares of stock

3) Short sell 300 shares of stock

4) Short sell 600 shares of stock

5) Do nothing