Difference between "If it's convenient to/for you"

[Takashiro]

To repeat the subject, what's the difference between "If it is convenient for you" and "If it is convenient to you"?
Actually, I thought they were more or less the same, before I came up with a multiple choice question where they are included as 2 options.

Thanks in advance!

[Haihao]

A good question again, Takashiro-san. I would think they are almost the same too as you have said. If there is any difference therebetween, I would think it is, of course, the nuance between "for" and "to" in this case:

If it is convenient for you = If it is convenient for your benefit: [+purpose].
If it is convenient to you = If it is convenient to your reach: [+distance]

It's just my personal two cents and could be very wrong, but I hope it could still be of some help to you.

[Blue_Snow]

Me too. I've seen many structures using the prep to and for flexibly. For example, To me,....and For me,... About these two structures, my teacher said To me means in my opinion and For me means As far as I'm concerned. So I think when we use To before a personal pronoun, the subjective opinion is emphasised and when we use For before a personal pronoun, objective opinion is emphasised. What do you think?

[Takashiro]

It's so kind of you to help me, Haihao San, as well as Blue Snow.
By the way, the question is as follows,
If ( ), please call me as soon as possible.
A. it is convenient for you B. it is convenient to you C. you're convenient D.(I can't really remember)

B is correct. Haihao San, your explaination works. ありがとうございます. ;-)

[Blue_Snow]

Your teacher said B was the correct choice? Then, I wonder why you both call each other San after calling out the actual name. What does it mean?

[Takashiro]

"san" is not English but Japanese, actually. It's used after a name to show respect.

[Blue_Snow]

Is it sir in English? And yes for my question in the above post?