$A$ quadratic polynomial $P(x)$ satisfies the conditions $P(0) = 0$,$P(1) = 0$,and $\int_{0}^{1} P(x) dx = 1$. The leading coefficient of the quadratic polynomial is:

  • A
    $6$
  • B
    $-6$
  • C
    $2$
  • D
    $3$

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