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Since question does not say anything about the time stamps of T1 and T2.

Assume Timestamp(T1) = 10 and Timestamp(T2) = 20.

Therefore this schedule is allowed under thomas write rule because in thomas write rule the write(x) of T1 will be ignored.

And it is not allowed under time stamp ordering because T1 is older transaction and hence write(x) will not be allowed .

So i think answer will be option B.
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