Ans: C
$\begin{array}{rcl}
T(1) & = & 8 \\
T(2) & = & T(1) +2(1) +6 \\
& = & 8 +2 +6 \\
& = & 16 \\
T(3) & = & T(2) +2(2) +6 \\
& = & 16 +4 +6 \\
& = & 26 \\
T(4) & = & T(3) +2(3) +6 \\
& = & 26 +6 +6 \\
& = & 38 \\
T(5) & = & T(4) +2(4) +6 \\
& = & 38 +8 +6 \\
& = & 52 \\
T(6) & = & T(5) +2(5) +6\\
& = & 52 +10 +6 \\
& = & 68 \\
T(7) & = & T(6) +2(6) +6 \\
& = & 68 +12 +6 \\
& = & 86
\end{array}$
