The above circuit has how many nodes?

$($Note$,$ incidentally, that the elements above have been given names like $V1$ and $R3$ in place of showing their element values, such as $3V$ and $5$ Elements can be labeled either way when their values are not important$)$

$($A$)02$

$($B$)03$

$($C$)4$

$($D$)05$

$($E$)6$