Dental Lower primary 1st molar has A 3 pulp horns and 3 root canals B 4 pulp horns and 3 root canals C 4 pulp horns and 4 root canals D 3 pulp horns and 4 root canals 💡 Explanation Lower primary 1st molar has ✓ Correct Answer: B. 4 pulp horns and 3 root canals