Assume the variable chain is the anchor for a node chain. Consider the following snippet of code, which

is designed to print the values of all nodes in the given node chain:

while chain $$ None:

print$(chain.ge{t}_d$ata$())$

chain $=$ chain.$ge{t}_n$ext$()$

Which of the following describes a potential problem with the code $($if any$)?$

The loop will go one step too far and try to get$\_$data$()$ from a None value.

The loop will end one node too early and one node's value will not be printed.

The anchor for the node chain is lost

The code does not correctly advance to the next node in the chain.