​In a certain code language, FRAGRANCE is written as ESZHQBMDD. How will EXCELLENCE be written as in that language?​​​

FRAGRANCE is written as ESZHQBMDD

Logic: For each letter in the word, alternately subtract 1 (move backward) for odd positions and add 1 (move forward) for even positions in the alphabet.

F-1=E, R+1=S, A-1=Z, G+1=H, R-1=Q,A+1=B, N-1= M, C+1=D, E-1=D

E-1=D, X+1=Y, C-1=B, E+1=F, L-1=K, L+1=M, E-1=D, N+1= O, C-1=B, E+1= F

DYBFKMDOBF , is the correct answer 

Thus, correct answer is (a) DYBFKMDOBF