Which one of the following statements is correct concerning Macaulay duration?

The percentage change in a bond's price is approximately equal to the change in the yield to maturity multiplied by $(1\backslash$times Macaulay duration$).$

The duration of a coupon bond is a linear function between the time to maturity and the duration.

The duration of a zero coupon bond is equal to the time to maturity.

The duration of a coupon bond is greater than that of a zero coupon bond given equal maturity dates.

Most bonds have durations in excess of $15$ years.