施工企业与钢材经销商签订购销合同，总货值为50万元，双方在协商定金数额时发生意见分歧。根据我国《担保法》的规定，该定金金额最多为(    )万元。

A、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">3 </span></p>

B、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">6</span></p>

C、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">10 </span></p>

D、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">18</span></p>

A、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">3 </span></p>

B、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">6</span></p>

C、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">10 </span></p>

D、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">18</span></p>