P1 sends <Ready T1> to TC.
A. P2 sends <Commit T1> to Tc.
B. P2 writes <Abort T1> to its local log and sends <Abort T1> to Tc.
C. P2 writes <Abort T1> to its local log and sends <Abort T1> to Tc and P1.
D. P2 writes <No T1> to its local log and sends <Abort T1> to TC.
Answer:D
P1 sends <Ready T1> to TC.
A. P2 sends <Commit T1> to Tc. B. P2 writes <Abort T1> to its local log and sends <Abort T1> to Tc. C. P2 writes <Abort T1> to its local log and sends <Abort T1> to Tc and P1. D. P2 writes <No T1> to its local log and sends <Abort T1> to TC.