当某种商品的需求和供给出现同时减少的情况时,那么( )

A、均衡价格下降,均衡产量减少

B、均衡价格下降,均衡产量无法确定

C、<span style="font-size:14.0pt;font-family:宋体; mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;; mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">均衡价格无法确定，均衡产量减少</span>

D、<p class="MsoNormal"><span style="font-size:14.0pt;font-family:宋体;mso-ascii-font-family: &quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">均衡价格上升，均衡产量减少</span><span lang="EN-US" style="font-size:14.0pt"><o:p></o:p></span></p>