单项选择题
The BIOS settings on a gaming laptop shows the current CPU speed at 3.5GHz. The defaultspeed specification of the CPU is 3.2 GHz with FSB at 800 MHz and locked CPU multiplier at 4x.Which of the following speed settings needs to be changed in the BIOS in order to run the CPU on its default frequency? （）
A. RAM CAS latency
B. FSB
C. FSB to CPU ratio
D. Multiplier
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