You need to create a tile source specification that meets the following requirements:

It uses three tile servers named s0, s1, and s2.
It follows the standard Virtual Earth 6.0 numbering scheme. It ensures that the tiles are visible in all the view types.

Which tile source parameter should you use within the tile source specification?

A.
http: //%1.yourserver.net/tiles/%4.jpg

B.
http: //%2.yourserver.net/tiles/%1%4.jpg

C.
http: //%4.yourserver.net/tiles/%2%1.jpg

D.
http: //%1.yourserver.net/tiles/%2%4.jpg