python

We have a dataframe, df$,$ and a variable, gender. We have the following code. Which is true?

from statsmodels.stats.weightstats import ttest$\_$ind

ttest$\_$ind$($df$.$gender$)$

Question $4$ options:

ttest$\_$ind$()$ was not created properly; there will be an error

the gender variable should have been df$[\text{'}$gender$\text{'}]$; there will be an error

This code is fine; it will run as expected

ttest$\_$ind was imported incorrectly; there will be an error