A spherical ball of lead, 3 cm in diameter, is melted and recast into three spherical balls. The diameters of two of these balls are \(\frac{3}{2}\) cm and 2 cm, respectively. Find the diameter of the third ball.
1
2.1 cm
2
3.3 cm
3
3 cm
4
More than one of the above
5
None of the above