单项选择题

某建筑工程公司欲在自己的土地上开设商店，以补充任务不足时施工队伍的开支。根据预测，商店的规模可以有甲、乙、丙三种，寿命期均为10年，其初期投资额、每年净收益如表所示。已知（ P/A，10%，10） -6.144。

甲、乙、丙三个投资方案的关系为（）。

A.独立方案
B.互斥方案
C.混合方案
D.互联方案

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