Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Task No. | Date given | Head of Household | Hand Grenade User | Hand Grenade Recipient |
| --- | --- | --- | --- | --- |
| 1.0 | December 10, 2009 (Day 68) | Paul Jake | Carol | Hermes |
| 2.0 | December 19, 2009 (Day 77) | Rica | Cathy | Patrick |
| 3.0 | December 26, 2009 (Day 84) | Cathy | Johan | Rica |
| 4.0 | January 2, 2010 (Day 91) | Paul Jake | Jason | Self Automatic Nomination |
| 5.0 | January 10, 2010 (Day 99) | Kath | Jason | Tibo |
| 6.0 | January 17, 2010 (Day 106) | Mariel | Hermes | Self Automatic Nomination |
| 7.0 | January 22, 2010 (Day 111) | Tibo | Tibo | Jason (Automatic Nomination) |
Question:
What is the latest task number for which Cathy is head of household?
Answer:
3.0