To correct the following code plotting two datasets $(x$ vs$.y,$ and $x$ vs$.z)$ on the same figure, which of the following statements is correct?

$y=3^{**}x{*}^{{?}^{?}}2+4$;

$z=sin(20**x{*}^{{?}^{?}}3+2)+5$;

figure

plot $,$

hold on

plot$(y,z)$

This code is already correct, and both curves will be presented on same figure

Once fixed, this plot will show two horizontal lines

To correctly plot $x$ vs$.z$ dataset, last line of the code needs to be corrected

Only the $x$ vs$.$ z curve in blue will be presented in the figure after running this code