Question: What is the sequence y(n) that results from the use of four point DFTs if the impulse response is h(n)={1,2,3} and the input sequence x(n)={1,2,2,1}?
Options
A : {9,9,7,11}
B : {1,4,9,11,8,3}
C : {7,9,7,11}
D : {9,7,9,11}
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