This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
In pulpotomy, medicament used for preservation of pulp: 
Select and explain. 
A. Calcium hydroxide, B. Glutaraldehyde, C. Ferric sulphate, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Devitalisation

Formocresol
Mummifying paste
Electrocautery

Preservation

Ca(OH)2, Fe2(SO4)3
Glutaraldehyde

Regeneration

Bone morphogenic protein
Tricalcium phosphate