If $f(y) = e^y$,$g(y) = y$ for $y > 0$,and $F(t) = \int_{0}^{t} f(t - y) g(y) dy$,then:

  • A
    $F(t) = 1 - e^{-t}(1 + t)$
  • B
    $F(t) = e^t - (1 + t)$
  • C
    $F(t) = t e^t$
  • D
    $F(t) = t e^{-t}$

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