Which one of the following formulas illustrates the mechanics of covered interest arbitrage? Assume the $1 is borrowed and S ₀ = spot rate; F ₁ = one-year forward rate; R _F = foreign country risk-free rate; and R _US = U.S. risk-free rate.

		$1 F1 (1 + RF)/S0 - $1 (1 + RUS)
		$1 S0 (1 + RF)/F1 - $1 (1 + RUS)
		$1 F1 (1 + RF)/S0 + $1 (1 + RUS)
		$1 S0 (1 + RF) - $1 (1 + RUS)/F1
		$1 S0 (1 + RF)/F1 + $1 (1 + RUS)