A one$-$year discount bond with a par value of $$1,000$ sold today, at issuance, for $$943$ has a

yield to maturity of

A$)4\mathrm{.}30\%.$ B$)5\mathrm{.}70\%.$ C$)6\mathrm{.}04\%.$ D$)9\mathrm{.}43\%$