Best treatment of choice for carious exposure of a primary molar in a 3 year old child who complain of toothache during and after food taking.. Formocresol pulpotomy

Best treatment of choice for carious exposure of a primary molar in a 3 year old child who complain of toothache during and after food taking:
a. Direct pulp capping with caoh.
b. Direct pulp capping with zao paste.
c. Formocresol pulpotomy.***
d. Caoh pulpotomy.