$(15\%)$ Four different structural systems are given $($all segments are beam segments$).$ Determine the

degree of indeterminacy for each one. $[)$ A$-$hinge, B$-$clamped, C$-$internal hinge, $()$ A$-$roller, B$-$hinge, C$-$fixed,

D$-$internal hinge, $()$ A$-$fixed, B$-$roller, $()$ A$-$hinge, B$-$internal hinge, C$-$clamped, D$-$roller$]$

$()$

$()$