A 66-year-old man was diagnosed with a malignant epithelial tumor, originating bronchus. What epithelium is the source of tumor development in this case?

Answer options

1. Simple columnar epithelium
2. Stratified non-cornified epithelium
3. Stratified cornified epithelium
4. Simple pseudostratified ciliated epithelium
5. Simple pseudostratified transitional epithelium