Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series.

p _ r _ p o _ p o r b _ o _ p o r b _ o r

o b r p r p

p _ r _ p o _ p o r b _ o _ p o r b _ o r

BY using options one by one .

We find that Option 4 is correct .

o b r p r p :-  p o r b p o r  / p o r b p o r /  p o r b p o r

Ans = o b r p r p