The correct option is A True
A relative pronoun is a pronoun which is used to refer to a noun (any person, place, thing or idea) that was previously mentioned or heard of, example: What, Which, Who, When. Compound relative pronouns are made by combining 'ever' or 'so ever' with what, which, when or who. They are said to have a double construction because they may be the subject for and also imply their own antecedents. Antecedent is a noun or phrase which the pronoun refers to. Consider this example: Whoever trespasses, he must be prosecuted. [Here he, the antecedent of whoever, is the subject of must be prosecuted, and whoever is the subject of trespasses.]
Whoever trespasses must be prosecuted. [Here the antecedent he is omitted, being implied in whoever. Hence, whoever has a double construction, being the subject of both trespasses and must be prosecuted.] Hence, this statement is true and Option A is correct.