编制生产预算时，关键是正确地确定预计销售量。( )

(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．

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What is the area of the figure above formed by a square and four semicircles
(1) The perimeter of the figure is 12π.
(2) The perimeter of the square is 24.