Corn call options with a $1.75 strike price are trading for a $0.14 premium. Farmer Donald decides to hedge his 20,000 bushels of corn by selling short call options. The continuously compounded risk-free interest rate is 7.84% and he plans to close his position in 6 months. What is the total premium he will earn on his short position?

a) $2,800

b) $2,912

c) $800

d) $1,600