In the hydrogen atom spectrum \[{{\lambda }_{3-1}}\] and \[{{\lambda }_{2-1}}\] represent wavelengths emitted due to transition from second and first excited states to the ground. state respectively. The value of \[\frac{{{\lambda }_{3-1}}}{{{\lambda }_{2-1}}}\]is

• A.   27/32
• B.  32/27
• C.  4/9
• D.  9/4