Consider the following schedule
S : R2(A), R1(A), W1(C), R3(C), W1(B), R4(B), W3(A), R4(C), W2(D), R2(B), W4(A), W4(B)
What is the number of Serial Schedules which are equal to Schedule S but not conflict equivalent to Schedule S?
A) 0 B) 1 C) 2 D) 3