A funeral home has $90,000 accounts receivable, $50,000 of that is concurrent, $10,000 is in 30 to 60 day column, and $20,000 is in the 60 to 90 day column, and $10,000 is over 90 days. What percent of the accounts receivable is past due?

A) 25%

B) 33%

C) 44%