Question 92
Five friends, Aurelio, Ennio, Flaminia, Lucia and Regolo, had a meal at a restaurant. The bill is 180 euros, and it is paid by Lucia, Ennio and Regolo: the first pays 90 euros, the second 57 euros and the third 33 euros. What is the minimum number of transactions of the type "Tizio gives $n$ euros to Caio" that must be made so that in the end each of the five has paid the same amount?
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6