Precedence graph

Question

Consider 2 schedules S1 and S2 with same set of transactions and precedence graph of S1 is
same as precedence graph of S2. Which of the following statement is True?

(a) Both S1 and S2 are conflict equal and conflict serializable schedule
(b) Both S1 and S2 are conflict equal but may not conflict serializable schedule
(c) Both S1 and S2 are conflict equal but may not equal schedules
(d) Both S1 and S2 are conflict equal and but may not view equivalent

Comments

i think option B...both having same conflicting action may or may not be CS...