The correct option is B his/they/it
The first blank indicates possession by third person singular masculine pronoun in the subjective sense(his), the second blank indicates the pronoun as the subject of the verb "say" in the general sense(they), and the last blank indicates the pronoun as the subject of the verb "will be". Since the pronoun substitutes the report, an inanimate object, third person singular neuter pronoun in the subjective sense, "it". Hence, Option C is correct. The rest of the options do not adhere to this rule, hence incorrect.