At a circular table for eleven will sit nine adults and two small children. The two children will sit next to each other, and the two parents of the children will sit next to the children so that there is one parent on each side of the two children. If rotating their positions around the table is not considered changing the arrangement, in how many different ways can the eleven people be arranged around the table.	Choose the correct option
A) 12,720 B) 16,120 C) 20,160 D) 24,240 E) 28,080
Consider the two parents and two children as one unit.   Then there are seven adults and one family unit.   The number of ways 8 can form a line is 8!   Around a circular table, there would be 8 rotations so we divide this number by 8.   There are 7! ways for 8 to sit around the circular table.   Then the two children have two options and the two parents have two options.   Then the total number of ways is 7!*2*2= 20,160   The answer is 20,160.
<result>C</result>
At a circular table for eleven will sit nine adults and two small children. The two children will sit next to each other, and the two parents of the children will sit next to the children so that there is one parent on each side of the two children. If rotating their positions around the table is not considered changing the arrangement, in how many different ways can the eleven people be arranged around the table.