Pt complains from severe spontaneous pain related to upper 6. It respond to vitality test no pain on percussion, diagnosis is.. Irreversible pulpitis

Pt complains from severe spontaneous pain related to upper 6. It respond to vitality test no pain on percussion, diagnosis is:
a. Irreversible pulpitis.***
b. Reversible pulpitis.
c. Acute apical periodotitis.