If a bond's volatility is $9\mathrm{.}20$ percent and the interest rate goes down by $0\mathrm{.}75$ percent $($points$),$ then the price of the bond:

Multiple Choice

decreases by $6\mathrm{.}90$ percent.

decreases by $9\mathrm{.}20$ percent.

increases by $6\mathrm{.}90$ percent.

increases by $0\mathrm{.}75$ percent.