In the two - rotor system shown in the figure, $$(I_1 < I_2)$$, a node of vibration is situated

A

Between $$I_1$$ and $$I_2$$ but nearer to $$I_1$$

B

Between $$I_1$$ and $$I_2$$ but nearer to $$I_2$$

C

Exactly in the middle of the shaft

D

Nearer to $$I_1$$ but outside