In Cloud computing, you can use $\_\_\_\_\_\_\_\_\_\_\_\_\_$ as a service.

$1.$

Infrastructure $($e$.$g$.,$ storage$)$

$2.$

Platform $($e$.$g$.,$ software development tool$)$

$3.$

Software $($e$.$g$.,$ GoogleApp$)$

$4.$

$1)$ and $2)$

$5.$

$1),2)$ and $3)$