Which of the following is the correct way to open a file named users.txt in $\text{'}$r$\text{'}$ mode?

Group of answer choices

infile $=$ read$(\text{'}$users$.$txt$\text{'},\text{'}$r$\text{'})$

infile $=$ open$(\text{'}$r$\text{'},$ users.txt$)$

infile $=$ readlines$(\text{'}$users$.$txt$\text{'},$ r$)$

infile $=$ open$(\text{'}$users$.$txt$\text{'},\text{'}$r$\text{'})$