A, B and C's operation has just ended. B, the appointed manager, had the following accounts in his books before closing entries: Dr. JO - Cash - 800, Cr. Payable to A - 105, Cr. Payable to C - 200. The joint operation's profit was P420. B took the unsold inventory costing P30.Requirement: Compute for the balance in Joint Operation account before distribution of profit.*

a. P495

b. P450

c. P390

d. P885