Which of the Following Statements Is Accurate Concerning Knock-Out Call

Multiple Choice

Which of the following statements is accurate concerning knock-out call options?

A) The delta is positive if it is a down-and-out call but can be positive or negative if it is an up-and-out call.
B) The delta can be positive or negative,but the gamma is always positive.
C) The delta is always positive,but the gamma can be positive or negative.
D) The delta can be positive or negative and the gamma can also be positive or engative.