Sarah Jones figured that gold prices are about to fall from today’s price. On March 1, she shorted 10 futures contracts on December gold for F₁ = 1,900. Each contract is for 100 ounces.

Nervously, she watched the gold price rising. Sarah decided to close out her position on April 30^thFutures contract for December gold was trading at F₂ = 1940.

When Sarah shorted the gold futures, margin requirement was $9.500 per contract and maintenance margin was $5,700 per contract.

At what price of gold, would she receive a margin call?