Consider the following dataframe named $$data$\_$customer$-$

customer category important sales

$0101$ cat$2$ yes $123$

$1102$ cat$2$ no $52$

$2103$ cat$1$ yes $214$

$3104$ cat$3$ yes $663$

Which of the following should be used to find the number of customers in each of the categories?

Answer choices

Select only one option

data$\_$customer$[\text{'}$category$\text{'}].$unique$()$

data$\_$customer$[\text{'}$category$\text{'}].$value$\_$counts$()$

data$\_$customer$[\text{'}$customer$\text{'}].$value$\_$counts$()$

data$\_$customer$([\text{'}$category$\text{'}])[\text{'}$customer$\text{'}].$value$\_$counts$()$