What is the MAIN reason for creating object methods $($functions$)$ using the 'prototype' keyword instead of embedding the teacherFullName method in the object definition itself?

function Course$($name$,$ teacherFirst, teacherLast$)\{$

this.name$=$name;

this.teacherFirst$=$teacherFirst;

this.teacherLast$=$teacherLast;

this.students$=[]$;

$//$let$\text{'}$s move this class to a prototype

$//$this$.$teacherFullName$()\{$

$//$return $`$$$\{$teacherFirst$\}$ $$\{$teacherLast$\}$;

$//\}$

$\}$

Course.prototype.teacherFullName$()\{$

return $`$$$\{$teacherFirst$\}$ $$\{$teacherLast$\}$;

$\}$

Group of answer choices

Code is easier to read

It's required

To keep it from being duplicated with each object instance

We don't want to share it with other class instances