3．（4 分）表：
<table><tr><td colspan="1" rowspan="1">土地规模（亩）</td><td colspan="1" rowspan="1">户数</td><td colspan="1" rowspan="1">户数比例</td></tr><tr><td colspan="1" rowspan="1">20 以下</td><td colspan="1" rowspan="1">24</td><td colspan="1" rowspan="1">17.3%</td></tr><tr><td colspan="1" rowspan="1">20~130</td><td colspan="1" rowspan="1">103</td><td colspan="1" rowspan="1">74.1%</td></tr><tr><td colspan="1" rowspan="1">131~300</td><td colspan="1" rowspan="1">10</td><td colspan="1" rowspan="1">7.2%</td></tr><tr><td colspan="1" rowspan="1">300 以上</td><td colspan="1" rowspan="1">2</td><td colspan="1" rowspan="1">1.4%</td></tr><tr><td colspan="1" rowspan="1">小计</td><td colspan="1" rowspan="1">139</td><td colspan="1" rowspan="1">100%</td></tr></table>
表为唐代后期敦煌某地土地占有情况统计表，据此可知，当时该地（ ）A．自耕农经济盛行 B．土地集中现象突出C．均田制破坏严重 D．农业生产效率提高
A