The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in

1. A. (1) Bronchioles and Fallopian tubes
2. B. (2) Bile duct and Bronchioles
3. C. (3) Fallopian tubes and Pancreatic duct
4. D. (4) Eustachian tube and Salivary duct

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