A . A.F1=0.9707X1-0.1168X2-0.0319X3+e1B . X1=0.9707F1-0.1168F2-0.0319F3+e1C . X1=0.9707F1+0.9409F2+0.9441F3+0.6159F4+0.7962F5+0.6396F6+0.9013F7+e1D . F1=0.9707X1+0.9409X2+0.9441X3+0.6159X4+0.7962X5+0.6396X6+0.9013X7+e1
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