Select the letter-cluster that can replace the question mark (?) in the following series.
BDF, DHL, FLR, ?
The logic here is
B + 2 = D Â $$\longrightarrow$$Â D + 2 = F Â $$\longrightarrow$$Â F + 2 = H
D + 4 = H Â $$\longrightarrow$$Â H + 4 = L Â $$\longrightarrow$$Â L + 4 = P
F + 6 = L Â $$\longrightarrow$$Â L + 6 = R Â $$\longrightarrow$$Â R + 6 = X
Similarly, the next letter-cluster in the series is HPX
Hence, the correct answer is Option A
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