Answer: Option 'A' is correct.
Step-by-step explanation:
Since we have given that
Number of times the coin is flipped = 25 times
Probability of getting head in each time = 
Probability of not getting head in each turn = 
So, by using "Binomial distribution", here n = 25 and
We need exactly 5 heads .
so, it will be written as

Hence, Option 'A' is correct.