Atenção: O texto abaixo refere-se às questões de números...

A

the global network should be periodically swept for bugs.

B

although bugs can cause serious problems, they are never dangerous enough to negatively affect commerce.

C

given the Internet’s complexity, dangerous bugs are unlikely to spread across the global network.

D

hostile attacks are not to be feared by internet users since foreign powers can be hired to prevent them.

E

one cannot ignore that the global network is vulnerable to bugs.