There are 3 final states in total 10 states .
7 are non final states , so all these state which come together to form a state in dfa are not have any finale state in dfa. .
so possible DFA state with only these 7 Non final states are 27 = 128
and total 210 = 1024 states are possible
so total number of state which contain final state is 1024 - 128 = 896
option C is true here.