In how many years will a sum of 800 at 10% per annum compound interest, compounded semi-annually becomes 926.10 ?

• A. <table><tr><td rowspan="2">1</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2"> years</td></tr><tr><td style="text-align: center;">2</td></tr></table>
• B. <table><tr><td rowspan="2">1</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2"> years</td></tr><tr><td style="text-align: center;">3</td></tr></table>
• C. <table><tr><td rowspan="2">2</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2"> years</td></tr><tr><td style="text-align: center;">3</td></tr></table>
• D. <table><tr><td rowspan="2">2</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2"> years</td></tr><tr><td style="text-align: center;">2</td></tr></table>