Which one of the following $12\%$ coupon bonds, with its yield to maturity at $12\%,$ sells at par $$1000$ experiences a price increase of $$23$ when the market yield drops by $56$ basis points $(0\mathrm{.}56\%)?$

A$.$ The bond with a duration of $6$ years. B$.$ The bond with a duration of $3$ years. C$.$ The bond with a duration of $2\mathrm{.}7$ years. D$.$ The bond with a duration of $4\mathrm{.}6$ years.