Find the $16^{th}$ term and the $n^{th}$ term of the $A.P.$ $9, 12, 15, \ldots$
- A$T_{16} = 54, T_n = 3n + 6$
- B$T_{16} = 51, T_n = 3n + 6$
- C$T_{16} = 54, T_n = 3n + 9$
- D$T_{16} = 51, T_n = 3n + 9$
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