The truth$-$functional connective SNERG has the following truth$-$table:

p$.....$q$....$r$.....$SNERG$($p$,$q$,$r$)$

T$.....$T$.....$T$.....$F

T$.....$T$.....$F$.....$F

T$.....$F$.....$T$.....$F

T$.....$F$.....$F$.....$T

F$.....$T$.....$T$.....$T

F$.....$T$.....$F$....$F

F$.....$F$....$T$....$F

F$.....$F$....$F$....$F

Which of the following arguments is valid?