Concept:Use the subject relative pronoun who when it acts as the subject of the clause that follows the parenthetical expression "I said."Explanation:The phrase "I said" is parenthetical, so it does not change the grammatical case of the relative pronoun.The pronoun is the subject of the verb in the relative clause, so the subject form who is required. is incorrect because it is the object form of the pronoun. is wrong because it repeats the subject unnecessarily.I said that he does not create a proper relative clause.Therefore, the most grammatically correct option is B. who i said.Answer:B. who i said