Consider a Down-And-Out Call and a Down-And-In Call with a Current

Multiple Choice

Consider a down-and-out call and a down-and-in call with a current stock price $S$ , barrier $H < S$ , and strike $K > H$ . When does the knock-out option increase in price and the knock-in decrease in price?

A) When the stock price increases.
B) When the volatility increases.
C) When the barrier increases.
D) When the strike increases.