Correct option is C
Given: "ACE" → "1925"

Find the positional values of each letter:
A = 1 → 12 = 1
C = 3 → 32 = 9
E = 5 → 52 = 25
Apply the Pattern to "BDF"
Positional values:
B = 2 → 22 = 4
D = 4 → 42 = 16
F = 6 → 62 = 36
Combine these squared values in sequence to get 41636.
The correct answer is (c) 41636.