What is belady in computer language ?

Belady’s anomaly is a process in which by increase in the number of page frames there is a increase in the number of page faults for memory access pattern.

Explanation: Belady's anomaly was if there is a increment in the number of page frames then it will result in the increment of page faults as well in computer terms. The process was seen usually on the following replacement algorithm:-

what about youre relationship

the answer is d underlined.