Let us assume x (t) = A cos( t + ), what is the value of k1 by considering ( ) is?

• A. |H(j )|e^{j[ ( )+ ]}
• B. A/2|H(j )|e^{j[ ( )+ ]}
• C. |H(j )|e^{-j[ ( )+ ]}
• D. A/2 |H(j )|e^{-j[ ( )+ ]}