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<p><span style="text-decoration: underline;">Each sentence below has three underlined parts having words or phrase marked A,B and C.Identify one of the underlined parts that must be changed to make the sentence correct.If the sentence needs no correction,the answer D is to be marked.</span> (a)<span style="text-decoration: underline;">Inevitably</span> scholars disagree on (b)<span style="text-decoration: underline;">an</span> authenticity of many objects whose origins are (c)<span style="text-decoration: underline;">unknown</span> .(d)<span style="text-decoration: underline;">No Error</span>.</p>

1. A a
2. B b
3. C c
4. D d