Help required:form i-134 -item no 11

[AM2004]

I am applying for my father's visitor visa. He'll be staying with me in my apartment for a period of 3-6 months depending on the period for which he'll get the visa.I'll be taking care of all his expenses.

In form i-134 ,item no 11:
1. Do i need to mention the exact period for which he'll be staying with me?
2. Do i need to mention the exact amount and frequency of monetory contibution ?
3. Is it ok just to write that i'll be taking care of all his expenses during his stay in US ( without mentioning the amount and duration) ?

[immihelp]

You don't have to be that precise.

Just write that you will take care of all his expenses during his entire stay.

[AM2004]

RE

Thanks a lot !