Calculate the number of radial nodes using the

Number of radial nodes $=\mathrm{n}-\mathrm{\ell }-1$

$=3-0-1=2$

Radial nodes= number of cuts on x-axis ( r).
The curve should start from zero. It can be positive or negative.
Size of the curve increases after touching the x- axis every time .

By keeping all this, we get the following curve:
 

Therefor corresponding graph is (C)

Hence, answer is $\left(3\right)$