The CPU frequency includes main frequency, external frequency, bus frequency and frequency multiplier. Which of the following statements about frequency multiplier is wrong?

The CPU frequency includes main frequency, external frequency, bus frequency and frequency multiplier. Which of the following statements about frequency multiplier is wrong?
A . PC overclocking usually involves adjusting the CPU multiplier without locking it. Adjusting the multiplier is much more stable than adjusting the external frequency.
B . The data transmission speed between the CPU and the system is limited. If you blindly pursue a high main frequency and obtain a high frequency CPU, there will be an obvious "bottleneck" effect.
C . Under the same external frequency, the higher the multiplier, the higher the CPU frequency, without limitation.
D . The frequency multiplier refers to the relative ratio between the CPU main frequency and the external frequency.

Answer: C