You are using Python to preprocess the data for your neural network. Which line of code correctly scales the dataset named data using standard scaling? scaled

$\_$data $=($data $-$ np$.$mean$($data$))/$ np$.$std$($data$)$

$$ scaled$\_$data $=$ data $/$ np$.$max$($data$)$

$$ scaled$\_$data $=$ data $/$ np$.$min$($data$)$

$$ scaled$\_$data $=$ np$.$mean$($data$)/$ np$.$std$($data$)$