Actually this a very absurd question.
Notice that option C is the very same grammer.
Also to note that
(a+b)*(a+b+e) = (a+b)*
Therefore the minimal form of the RegEx will be (a+b)*a
Clearly First option is not the same,
Option b is the same as (a+b)*a because (e+a+b)+ can generate all strings over a,b and also e. Therefore equals to (a+b)*.
Option C is the same .. thats very funny :D