In C$+$H$,$ the push$\_$back$()$ function is a member function of the stdivector class, which is part of the Standard Template Library $($STL$).$ This function is used to add an element to the end of a vector.Then, what is printed on screen by this code?A$)01234$B$)12345$C$)43210$D$)000002)$ A code file is given below:qquadWhat is the purpose of line $17$ in main $()$ definition?A$)$ Add $0$ and $1($integer elements$)$ to the end of the mylist member vector.B$)$ Delete the member vector of myList.C$)$ Defines a standard iterator to search an element inside mylist member yector.D$)$ Add $2$ zero valued integer elements to the end of the mytist member vector:$3)$ Consider the line given below:

Then the identifier $($variable$)$ local is expected to be of type:

A$)$ float

B$)$ array

C$)$ int

D$)$ bool

In Ct$+,$ a map is a part of the Standard Template Library $($STL$)$ and represents a collection of key$-$value pairs, where each key is unique Given the code block:line $6$ should be:A$)$ map cstring, int userliPs;B$)$ string map userlPs, first, second;C$)$ usertPs e map: string, int $>$;D$)$ list cstring, int$>$ userlPs;