Correct option is A
HONEST → IPOFTU
H → I (shift of +1)
O → P (shift of +1)
N → O (shift of +1)
E → F (shift of +1)
S → T (shift of +1)
T → U (shift of +1)
Each letter is shifted forward by 1 in the alphabet.
Now, applying the same shift to "SISTER":
S → T (shift of +1)
I → J (shift of +1)
S → T (shift of +1)
T → U (shift of +1)
E → F (shift of +1)
R → S (shift of +1)
Thus, "SISTER" will be coded as TJTUFS.
The correct answer is: (a) TJTUFS