问题：
[单选题]给水引入管的埋设深度主要根据城市给水管网及当地的气候、水文地质条件和地面的荷载而定。在寒冷地区,引入管管顶应埋在冰冻线以下（） 。
A、0.15m
B、0.3m
C、0.4m
D、0.5m
参考答案：
A
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