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B
Dextral and sinistral
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C
Dextral
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D
Sinistral
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Solution
The correct option is B Dextral or sinistral Pila is a genus of large freshwater snails belonging to family Ampullariidae. It is commonly known as apple snail. Pila scutata is the scientific name of apple snail. It is the largest freshwater snail. In this, the coiling of the shell is dextral (right-handed) or sinistral (left-handed).