If the constant term in the expansion of $\left( 3 x ^ { 3 } - 2 x ^ { 2 } + \frac { 5 } { x ^ { 5 } } \right) ^ { 10 }$ is $2 ^ { k } \cdot l$, where $l$ is an odd integer, then the value of $k$ is equal to (1) 6 (2) 7 (3) 8 (4) 9
If the constant term in the expansion of $\left( 3 x ^ { 3 } - 2 x ^ { 2 } + \frac { 5 } { x ^ { 5 } } \right) ^ { 10 }$ is $2 ^ { k } \cdot l$, where $l$ is an odd integer, then the value of $k$ is equal to\\
(1) 6\\
(2) 7\\
(3) 8\\
(4) 9