Max Purchases a New Auto in 2018 at a Cost

Max purchases a new auto in 2018 at a cost of $56,000.He uses the car 80% for business.Assuming a half-year convention, bonus depreciation, but no immediate expensing, what is the depreciation deduction on the auto?

A) $44,800
B) $14,400
C) $18,000
D) $10,000
E) $8,000