$1 + \frac{a - bx}{1!} + \frac{(a - bx)^2}{2!} + \frac{(a - bx)^3}{3!} + \dots \infty = $
- A$e^{a - bx}$
- B$e^{a - bx} - 1$
- C$1 + a \log_e(a - bx)$
- D$e^{-bx}$
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