Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
JR Freight Class EF510
Table title:
Build details
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Number </th><th colspan=1 rowspan=1 > Delivered </th><th colspan=1 rowspan=1 > Livery </th><th colspan=1 rowspan=1 > Transfer to JR Freight </th></tr>
<tr> <td colspan=1 rowspan=1 > EF510-501 </td><td colspan=1 rowspan=1 > 25 December 2009 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-502 </td><td colspan=1 rowspan=1 > 26 January 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-503 </td><td colspan=1 rowspan=1 > 20 April 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-504 </td><td colspan=1 rowspan=1 > 7 May 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-505 </td><td colspan=1 rowspan=1 > 19 May 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-506 </td><td colspan=1 rowspan=1 > 2 June 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-507 </td><td colspan=1 rowspan=1 > 15 June 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-508 </td><td colspan=1 rowspan=1 > 25 June 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-509 </td><td colspan=1 rowspan=1 > 9 July 2010 </td><td colspan=1 rowspan=1 > ■ Cassiopeia silver </td><td colspan=1 rowspan=1 > March 2016 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-510 </td><td colspan=1 rowspan=1 > 22 July 2010 </td><td colspan=1 rowspan=1 > ■ Cassiopeia silver </td><td colspan=1 rowspan=1 > March 2016 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-511 </td><td colspan=1 rowspan=1 > 6 August 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > July 2013 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > EF510-512 </td><td colspan=1 rowspan=1 > 27 August 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td class="highlighted"  colspan=1 rowspan=1 > December 2015 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > EF510-513 </td><td colspan=1 rowspan=1 > 10 September 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td class="highlighted"  colspan=1 rowspan=1 > December 2015 </td></tr>
<tr> <td colspan=1 rowspan=1 > EF510-514 </td><td colspan=1 rowspan=1 > 20 October 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td colspan=1 rowspan=1 > February 2016 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > EF510-515 </td><td colspan=1 rowspan=1 > 8 October 2010 </td><td colspan=1 rowspan=1 > ■ Hokutosei blue </td><td class="highlighted"  colspan=1 rowspan=1 > December 2015 </td></tr>
</table>
Question:
Which locomotives were transferred to JR Freight in December 2015?
Answer:
Locomotives EF510-512, 513, and 515 were transferred to JR Freight in December 2015.