$\{$

class Solution

$\{$

static void Main$($string $[]$ args$)$

$$

Stack st $=$ new Stack$()$;

st$.$Push $(1)$;

st$.$Push $(1\mathrm{.}1)$;

st$.$Push $(\text{'}z\text{'})$;

st$.$Push$("$Hello$")$;

foreach $($var e in st$)$

$\{$

Console.Writeline$($e$)$;

$\}$

$\}$

$\}$

$\}$

Pick ONE option

Compile$-$Time Error at st$.$Push$(1\mathrm{.}1)$

Compile$-$Time Error at st$.$Push$(\text{'}$z$\text{'})$