For a futures contract, which of the following is true? The margin account values for long and short side of the contracts are generally not equal. If the value of the futures contract increases by $1, then the margin account of the short side will increase by $1 and the margin account of the long side will decrease by $1. If the value of the futures contract increases by $1, then the margin account of the short side will decrease by $1 and the margin account of the long side will increase by $1. The margin account values at expiry are equal to the future price