An investor has just entered five long gold futures contracts traded on the CME. The gold futures price is $1,820 per ounce. The size of each contract is 100 ounces. The initial margin is $5,500 and the maintenance margin is $5,000 per contract. What is the smallest price change that would trigger a margin call?O an increase of $5 per ounceO an increase of $1 per ounceOa decrease of $5 per ounceO a decrease of $1 per ounceO a decrease of $12 per ounce