Which of the following is TRUE about interest rates?

		Par yield is the coupon rate that causes bond price to equal to its market value.
		A LIBOR rate is lower than the Treasury rate when the two have the same maturity.
		Since the 2008-2009 crisis, Overnight Indexed Swap (OIS) rates are now often used as a proxy for risk-free rates in derivatives valuation.
		Bond yield is the single discount rate that gives the value of the bond equal to its par (or principal) value.