If $\int_{-1}^4 f(x) dx = 4$ and $\int_2^4 (3 - f(x)) dx = 7$,then $\int_{-1}^2 f(x) dx = $

  • A
    $5$
  • B
    $-5$
  • C
    $4$
  • D
    $-4$

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