Regarding indoor distribution antennas and components, which of the following statement is wrong?

Regarding indoor distribution antennas and components, which of the following statement is wrong?
A . The leaky cable can be regarded as a kind of slot antenna, suitable for coverage in tunnels, subways, etc.
B . Attenuator: consuming the excessive energy of RF signal, mainly used to reduce signal level and avoid the influence of overflow
C . Try to use "high power, less antenna" for indoor antenna layout
D . Power splitter: Split one signal into two or more channels (three-way, four-way) output

Answer: C