I have a client who is a jeweler. He wants me to put "The Four Cs" on his website.
FYI - the Four Cs are cut, clarity, color, and carat - if you wanted to know.
Anyway, he seems to think that the "C" needs an apostrophe ("The Four C's"). I told him that since they aren't possessive, the apostrophe is wrong.
Thanks in advance
I think the answer depends on where your client is from, or what type of English they use.
According to Lynn Truss (author of Eats Shoots & Leaves), the apostrophe is no longer used for plurals of abbreviations in British English. However, it is still the accepted convention in American English.
"4 C's" cut clarity carat color
turns up 536,000 hits
"4 Cs" cut clarity carat color
gives only 48,000 hits.
As a speaker of American English, I would write 4 C's.
Funny. I get 900,00 for "4 Cs" and 250,000 for "4 C's"
I agree with no apostrophe
As in "The ABCs of emergency heart-lung resuscitation." not "The ABC's of..."