A data set that consists of $56$ numbers has a minimum value of $19$ and a maximum value of $72.$ Determin the class boundaries using the $2^{k}n$ rule if the data are:

a$)$ discrete

b$)$ continuous

a$)$ Enter the class boundaries if the data are discrete. Select the correct choice below, and fill in the answer boxes to complete your choice.

A$.$

$19$ to less than to less than $37$

to less than to less than $55$

$55$ to less than to less than

B$.$

$19$ to

to $40$

to

to $62$

$63$ to

C$.$

$19$ to

to $36$

to

to $54$

$55$ to

to

D$.$

$19$ to less than

to less than $41$

to less than

to less than $63$

$63$ to less than