3. The equation $7 x^{2}-(k+13) x+k^{2}-k-2=0$ (where $k$ is a real number) has two real roots $\alpha, \beta$, and $0<\alpha<1,1<\beta<2$. The range of values for $k$ is
(A) $3<k<4$;
(B) $-2<k<-1$;
(C) $3<k<4$ or $-2<k<-1$;
(D) No solution.
3. (C)

Let $f(x)=7 x^{2}-(k+13) x+k^{2}-k-2$.
$\left\{\begin{array}{l}f(0)=k^{2}-k-2>0 \\ f(1)=k^{2}-2 k-80\end{array}\right\} \Rightarrow 3<k<4$ or $-2<k<-1$.