how did u gate 4,....
1. one for s row a column
2. s row b column..
2...
no ..under (A,a) and(A,b)...we would get...A->S First of S(a,b)
similarly under (B,a) and (B,b)....B->S
$First (S) = First(A) = First(B)= {\{a, b, \epsilon}\} \\ Follow (S)= {\{a, b, \$} \}$
$Follow (A)= {\{a, b} \}$
$Follow (B)= {\{a, b, \$} \}$
LL(1) Parse Table:
$S\rightarrow aAbB$
$S\rightarrow \epsilon$
$S\rightarrow bAaB$
2 multiple entries
Hence 2 is the correct answer