Richard works for a company in a piece rate system. His employer pays him on incremental production level basis. The pay rate for per item produce is $15, if he produces 20-30 item then only he starts getting $20 per item and over 30 he earns $22 per item plus 10 percent incentive on the first tier of earning. If he made 45 items last week, then how much will he make gross ?

a)850.25

b)863.50

c)865.50

d)None of the above