One six-foot Italian hero serves either 12 children or 8 adults. Approximately, how many sandwiches do you need to feed a party of 250,75 of whom are children?A. 21B. 24C. 29D. 30E. 32答案选C,但是我不清楚为什么,也没看明白题干意思,大家帮忙翻译一下,在解释一下做法吧,好的可追分~谢谢。