State_Color Solution:
2nd normal form is violated because B--> C. Note that C-->B is NOT true.
| A | B | D |
| 20 | red | 76854 |
| 20 | blue | 15767 |
| 30 | red | 889934 |
| 40 | blue | 576342 |
| 40 | green | 49734 |
| 50 | purple | 49734 |
| 50 | blue | 87003 |
| 60 | green | 29 |
| B | C |
| red | California |
| blue | Ohio |
| green | California |
| purple | Texas |