In Comparing a Chooser to Its Straddle Counterpart, Which of the Following

Multiple Choice

In comparing a chooser to its straddle counterpart, which of the following statements is not valid?

A) A straddle is always worth more than chooser.
B) The delta of a straddle is always greater than that of a chooser.
C) The delta of a chooser lies between $- 1$ and $+ 1$ .
D) The delta of a straddle lies between $- 1$ and $+ 1$ .