Considering the following code:

pi $=3\mathrm{.}14$

radius $=5$

circumference $=2*$pi$*$radius

print$(\text{'}$The circumference of a circle with radius $\text{'}+$str$($radius$)+\text{'}$ is $\text{'}+$str$($circumference$))$

What is the data type of the variable circumference?

$1.$

Double

$2.$

Integer

$3.$

Float

$4.$

String