Which of the following is true if yt= +++

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A. E(yt| xt,yt -1, xt -1) = E(yt| xt,yt -1, xt -1,……) 
B. E(yt| xt,yt -1, xt -1) = 0
C. E(yt| xt,yt -1, xt -1)  = E(yt -1) + E(xt) + E(xt -1)
D. E(yt| xt,yt -1, xt -1)  = E(yt)  

Answer: A

Economics

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