单项选择题

A.上起自左右肋缘下1cm,下至耻骨联合上1cm,左右至脐周10cm,避开脐周2cm范围
B.脐周上下5cm,左右10cm,避开脐周1cm范围
C.脐周上下3cm,左右10cm,避开脐周2cm范围
D.脐周上下5cm,左右10cm,避开脐周2cm范围