At a certain restaurant, the ratio of the number of cooks to the number of waiters is 3 to 11. When 12 more waiters are hired, the ratio of the number of cooks to the number of waiters changes to 1 to 5. How many cooks does the restaurant have?	Choose the correct choice from the following options:
A) 4
B) 6
C) 9
D) 12
E) 15
Originally there were 3k cooks and 11k waiters.   The new ratio is 1:5 which equals 3:15.   15k = 11k+12   k=3   There are 9 cooks.   The answer is 9.
<result>C</result>
At a certain restaurant, the ratio of the number of cooks to the number of waiters is 3 to 11. When 12 more waiters are hired, the ratio of the number of cooks to the number of waiters changes to 1 to 5. How many cooks does the restaurant have?