History of question #270177
| When | Who | Action | New State |
|---|---|---|---|
| William Grant | Answer | Answered | |
| Yuan-Chen Cheng | Reopen | Open | |
| William Grant | Request for more information | Needs information | |
| Yuan-Chen Cheng | Give more information | Open | |
| William Grant | Answer | Answered | |
| Yuan-Chen Cheng | Confirm | Solved |
