Solve the System by the Method of Substitution $\left\{ \begin{array} { l } y = x ^ { 3 } - 6 x ^ { 2 } + 4 \\y = x ^ { 2 } - 10 x + 4\end{array} \right.$

Multiple Choice

Solve the system by the method of substitution. $\left\{ \begin{array} { l } y = x ^ { 3 } - 6 x ^ { 2 } + 4 \\y = x ^ { 2 } - 10 x + 4\end{array} \right.$

A) (2, -12) , (1, -5)
B) (5, -21) , (2, -12) , (0, 4)
C) (5, -21) , (-1, 15)
D) No real solution
E) (5, -21) , (-2, 28) , (1, -5)