Please answer the question based on the following passage. You need to choose one letter from the given options, A, B, C, or D, as the final answer, and provide an explanation for your choice. Your output format should be ###Answer: [your answer] ###Explanation: [your explanation]. ###Passage:Five graduate students NAME_1 NAME_2, NAME_3, NAME_4, and NAME_5 graduated from a linguistics major in a college of arts of a university in 2014, and were hired by one of the three employers, Tianshu, NAME_6, and NAME_7, and at least one of them was hired by each unit.name.Known? (1) NAME_3 was hired by Tianshu; (2) NAME_3 and NAME_4 were not hired by the same unit; (3) NAME_5 and NAME_4 were hired by the same unit; (4) If NAME_8 was hired by NAME_7, then NAME_9 hired by NAME_7. ###Question:Which of the following must be correct? ###Options: (A)NAME_8 and NAME_2 were hired by the same unit. (B)NAME_2 and NAME_5 were hired by different units (C)Tianshu hired at most two people. (D)Tianshu and NAME_7 employ the same number of people. Provide exactly two different responses that are separated with 6 asterisk symbols: ******.
user