Calculate net patient service revenue (dollars in thousands), using the information below. The table below is a list of accounts at December 31, 2012, for healthy clinic (Dollars are in thousands)

Gross patient service revenues $500 Unrestricted Contributions $20

Other revenues $125 Operating Gains $5

Premium Revenues $100 Charity Care $20

Contractual Discounts $50 Allowance for Doubtful Accounts $25

A. $655

B. $555

C. $430

D. $405

E. none of the above