问题详情

The word "problem" in the fourth paragraph refers to the fact that ______.
A．CT scans are one of the biggest bandwidth consumers
B．there are not enough mobile phones for distributing medical intelligence
C．communications satellites can only cope with the short-term needs during disasters
D．bandwidth is not adequate to transmit complex medical images around the world请帮忙给出正确答案和分析，谢谢！