During a winter inspection in a cold climate, you observe a significant ridge of ice along the eaves of a home. This is most likely caused by:
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A
Clogged gutters and downspouts.
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B
Lack of a self-adhering ice and water shield membrane.
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C
Heat loss from the house into the attic, melting snow on the upper roof.
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D
Excessively high winds blowing snow onto the roof edge.