Find the word which has a different sound in part underlined

I. Find the word which has a different sound in part underlined.
1/A. funny B. lunch C. sun D. computer
2/A. photo B. going C. brother D. home
3/A. school B. teaching C. chess D. chalk
4/A. cold B. volleyball C. telephone D. open
5/A. meat B. reading C. bread D. seat