What is the 1st term in sequence S ？（）
(1)The 3 rd term in S is 2.
(2)The 2 nd term in S is twice the 1 st, and the 3 rd term is three times the 2 nd.
A．条件(1)充分，但条件(2)不充分．
B．条件(2)充分，但条件(1)不充分．
C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D．条件(1)充分，条件(2)也充分．
E．条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．