A cryptographic code is designed as follows. The first time a letter appears in a given message it is replaced by the letter that is 1 place to its right in the alphabet (assuming that the letter \mathrm{A} is one place to the right of the letter \mathrm{Z} ). The second time this same letter appears in the given message, it is replaced by the letter that is 1+2 places to the right, the third time it is replaced by the letter that is 1+2+3 places to the right, and so on. For example, with this code the word banana becomes cbodqg. What letter will replace the last letter \mathrm{s} in the message
“Lee’s sis is a Mississippi miss, Chriss!”?
Answer Choices
A. g
B. h
C. 0
D. \mathrm{s}
E. \mathrm{t}