The output of a circular convolution performed on two signals x1(n) = {2, 1, 2, 1} and x2(n) = {1, 2, 3, 4} is:

• A. {16, 14, 16, 14}
• B. {14, 16, 14, 16}
• C. {12, 14, 12, 14}
• D. {14, 12, 14, 12}