Math Question - Kinda

If you wanna put a formula for discounts applying to 6 people and above, what is the formula that you should apply? [a] > 6 [b] >5 [c] >7 [d] <6 [e] don't know, my math plain sucks! Thanks to Mr Smurfie for answering it correctly, brought tears to my eyes really. I've people selecting all the wrong ones - except [e] of coz, coz it was not included for them. Perhaps I should so when they chose everything except the correct answer, I wouldn't be so pissed.