Find one word that has different pronunciation from others

Find one word that has different pronunciation from others.

1. A. thank     B. that    C. this    D. those

2. A. cost     B. most    C. post    D. roast

3. A. arm     B. charm    C. farm    D. warm

4. A. come     B. home    C. some    D. none

5. A. man     B. fan    C. table    D. fat