Question $1$

Points: $1$

Consider the below code for creating dictionary.

$mi{x}_d$ict $=\{\text{'}1\text{'}$:$[\text{'}a\text{'},\text{'}b\text{'}],\text{'}2\text{'}$: $3,\text{'}a\text{'}$: $[0,2],4$:$\text{'}a\text{'}\}$

Is the above declaration is the valid code?

A$.$ Valid declaration $($no error$)$

B$.$ Invalid declaration $($user will get error$)$