The right circular cone of largest volume that can be enclosed by a sphere of 1 m radius has a height of

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