If the coefficients of \[{{x}^{2}}\]and \[{{x}^{3}}\]in the expansion – McqOptions

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1.	If the coefficients of \[{{x}^{2}}\]and \[{{x}^{3}}\]in the expansion of \[{{(3+ax)}^{9}}\] are the same, then the value of a is [DCE 2001]
A.	\[-\frac{7}{9}\]
B.	\[-\frac{9}{7}\]
C.	\[\frac{7}{9}\]
D.	\[\frac{9}{7}\]
Answer» E.

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