Let two chords AB and AC of the larger circle touch the smaller circle having same centre at X and Y. Then XY = ?

• A. BC
• B. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">BC</td></tr><tr><td style="text-align: center;">2</td></tr></table>
• C. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">BC</td></tr><tr><td style="text-align: center;">3</td></tr></table>
• D. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">BC</td></tr><tr><td style="text-align: center;">4</td></tr></table>