The correct option is B NHCGGU
Given, BASIC is written as DDULE.
Here each letter is coded as:
B +2−−−→ D
A +3−−−→ D
S +2−−−→ U
I +3−−−→ L
C +2−−−→ E
Similarly, LEADER will be coded as:
L +2−−−→ N
E +3−−−→ H
A +2−−−→ C
D +3−−−→ G
E +2−−−→ G
R +3−−−→ U
Therefore, the word 'LEADER' is coded as 'NHCGGU'.
Hence, option (B) is the correct answer.