attribute $1$

attribute $2$

attribute $3$

attribute $4$

$1$

A

$132$

$001$

$2$

R

$143$

$002$

$2$

A

$132$

$004$

$1$

T

$132$

null

$$

Which of the following pair of attributes could be a primary key for the table?

Group of answer choices

attribute $1,$ attribute $2$

attribute $3,$ attribute $4$

attribute $1,$ attribute $4$

attribute $2,$ attribute $3$