Musical instrument is made using four different metal strings 1, 2, 3 and 4 with mass per unit length   $\mu , 2\mu , 3\mu$ and  $4\mu$  respectively. The instrument is played by vibrating the strings by varying the free length in between the range $L_0$   and  $2L_0$. It is found that in string $-1\left(\mu \right)$   at free length  $L_0$  and tension  $T_0$  the fundamental mode frequency is $f_0$ . List-I gives the above four strings while list -II lists the magnitude of some quantity.

	COLUMN -I		COLUMN-II
I)	string -1 $\left(\mu \right)$	P)	1
II)	String – 2  $\left(2\mu \right)$	Q)	1/2
III)	String - 3 $\left(3\mu \right)$	R)	$1/\sqrt{2}$
IV)	String - 4 $\left(4\mu \right)$	S)	$1/\sqrt{3}$
		T)	$3/16$
		U)	$1/16$

If the tension in each string is $T_0$  , the correct match for the highest fundamental frequency in $f_0$ units will be