If sin 17 = (x / y) , then sec 17 sin 73 is equal to

• A. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>y</center></td><td rowspan="2"></td></tr><td align="center"> <span style=" text-decoration: overline;">y - x </span></td></table>
• B. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>y </center></td><td rowspan="2"></td></tr><td align="center"> <span style=" text-decoration: overline;">x(y - x )</span></td></table>
• C. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>x</center></td><td rowspan="2"></td></tr><td align="center"> <span style=" text-decoration: overline;">(y - x )</span></td></table>
• D. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>x </center></td><td rowspan="2"></td></tr><td align="center"> <span style=" text-decoration: overline;">y(y - x )</span></td></table>