Two concurrent transactions T1 and T2 are in conflict when

PYQ RPSC Programmer 2013

1. A.

   T1 reads from x, T2 reads from y

2. B.

   T1 reads from x, T2 writes to x

3. C.

   T1 reads from x, T2 writes to y

4. D.

   T1 writes to x, T2 writes to y

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