please give clear answer.

Consider a two-year futures contract on copper, where no income is assumed and $0.01 per pound per year to store the copper. Also assume that the storage cost is paid at the end of the year. The spot price of copper is $3.42 per pound and prevailing two years risk free rate is 4%. If copper futures price is $3.52 per pound, how an arbitrager will earn the profit?