Hi !!
The CORRECT ANSWER is B
Explanations :
The subjects when connected by <em>or, nor, not only </em>may be singular or plural.
So the verb will agree either in singular or plural depending on the subject.
EX :
Amy <em>or</em><em> </em>Sharon is coming. => one singular subject
My parents <em>or </em>my sisters are coming. => one plural subject
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<em>CAREFUL</em>
<em>When connected with </em><em>and, </em><em>always take plural =></em>
<em>Amy and Sharon </em><em>are </em><em>coming. = 2 subjects</em>
<em>-</em>
☺☺☺
