The number of languages from the below given options that are Deterministic Context Free languages are?
(a) apbqcrds | p+q=r+s
(b) apbqcrds | p+r=q+s
(c) wxwR | w∈(0,1) x∈(a,b)
(d) aibjck | j=i-k
- Only (a), (b) and (d) are DCFLs
- Only (a) and (b) are DCFLs
- Only (a), (c), (d) are DCFLs
- All are DCFLs Answer is (4).. Why????