Which of the following is true for a call option on a non$-$dividend$-$paying stock when the stock$$s price equals the strike price? $($Hint: You can assume the interest rate is never negative$)$

A$.$

Delta can be greater than or less than $0\mathrm{.}5.$

B$.$

It has a delta greater than $0\mathrm{.}5.$

C$.$

It has a delta of $0\mathrm{.}5.$

D$.$

It has a delta less than $0\mathrm{.}5.$