Why are the prices of mobile telephone services lower in China’s eastern coastal region

A．The average disposable income is lower in the region.

B．The GDP is higher in the region.

C．The costs of operators are lower due to a greater number of users of mobile phone services in the region.

D．The operators compete with each other in order to win over subscribers.

毛细血管出血的表现是（）

A.血色鲜红，血液像喷泉样射出

B.血色暗红，较缓慢从破裂血管中流出

C.血色暗红，血液从创面渗出

D.血色鲜红，血液从创面渗出

E.以上都有可能