Assuming other conditions are unchanged, if the power parameter PB is changed from 0 to 1, then which of the following statements is correct?

Assuming other conditions are unchanged, if the power parameter PB is changed from 0 to 1, then which of the following statements is correct?
A . Cell reference signal power is increased by 3d
C . Cell reference signal power is increased by 1dB
D . Cell reference signal power is reduced by 3dB
E . Cell reference signal power is reduced by 1dB

Answer: A