# Deltas on Barrier options vs Vanilla options

In "Heard on the Street" it states that

$$\Delta_{\text{up and out call}} \leq \Delta_{\text{standard call}} \leq \Delta_{\text{down and out call}}$$

Is there an intuitive explanation for why this is true?

• $\Delta$ means the variation of option's price with respect to the underlying's price. So, the argument doesn't apply in that case. – Ninja2020 Dec 30 '19 at 18:29