Read the sentence.Alma plans to visit London and Paris, where her parents went on their first trip together as a married couple.
A
It is a restrictive relative clause because it begins with a relative pronoun, has both a subject and a verb, and is not necessary to the meaning of the sentence.B
It is a nonrestrictive relative clause because it begins with a relative pronoun, has both a subject and a verb, and is necessary to the meaning of the sentence.C
It is a restrictive relative clause because it begins with a relative pronoun, has both a subject and a verb, and is necessary to the meaning of the sentence.D
It is a nonrestrictive relative clause because it begins with a relative pronoun, has both a subject and a verb, and is not necessary to the meaning of the sentence.