Please answer all just need correct answer

10,000 call options. What should she do to delta-hedge her position? a. Long 5,778 shares of the underlying stock b. Long 4,222 shares of the underlying stock c. Short 5,778 shares of the underlying stock d. Short 4,222 shares of the underlying stock account of autocorrelation? a. 3.9 b. 3.2 c. 3.4 d. 4.5