Number of concurrent schedules

Question

Answer 1

t1-->t2   {w1B--r2B is c conflict}

only one serial schedule possible.

for t2 -->t1 {w2A -- r1A is a conflict}

only 1 serial schedule possible.

TOTAL=2

Comments

@ravi i understood your point.  due to conflict pairs concurrency is not possible fot these two transactions. 
there are only 2 possible schedules 
first execute T1 completely followed by T2 (or)
First execute t2 completely followed by T1.

I didn't get the question itself, "how many concurrent schedules are conflict serializable" but there is no concurrency possible here, right?

---

Thank you @raviyogi

---

serial schedule are always serializable.