Fill in the blank.

With a $$4300$ budget allocated to a digital ads campaign and data that shows the campaign has received $18,696$ clicks, the cost per click $($CPC$)$ is equal to $\_\_\_\_\_\_\_\_\_.$

$$0\mathrm{.}23.$

$$2\mathrm{.}30.$

nothing; the data provided is not enough to calculate the cost per click $($CPC$).$

$$4\mathrm{.}35.$