Two options have the same format ‘2 (2, 4) int32’. Is it the spacing between ‘,’ and ‘4’?
Question No 6 of the quiz
Hey @A18ML0031, thank you for bringing it to my notice. I’ll ask the team to correct the options. No there’s no difference between option (a) and (b). I’ll get the question updated !
Thanx for your patience ! 
I hope this clears your doubt !
Happy Learning !