Hi all,

So, a quick question. I'm doing a branding piece for a client. They have four company values: Inform, Invest, Inspire and Involve and they call them the four "I"s.

Question, what are my options when writing this:

a) The four "I"s
b) The four I's
c) The four Is

Is it ever acceptable to use b)? Especially in a graphic. The other two seem so awkward.

Thanks in advance,
Stephen

B is fine.
One of the usages of the apostrophe is for forming plural form of letters, as I know.