Which of the following Python concepts are demonstrated directly or indirectly by the following code:In $[1]$: type$($x$)$ Out$[1]$: intIn $[2]$: x $=4\mathrm{.}1$ In $[3]$: type$($x$)$Out$[3]$: float In $[4]$: x $=$ 'dog'In $[5]$: type$($x$)$ Out$[5]$: str