William purchases radios at $10 each and sells them at $15 each. In his draft statement of financial position, inventory was shown at $1500. The way he calculated inventory was correct. Afterwards, he discovered that 12 radios could be sold only at $8 each and that 4 radios had been stolen. By what amount should William reduce his inventory valuation?
- A$64
- B$84
- C$124
- D$144