The Optimal Solution to the Nonlinear Model : Minimize $f(x)=10 X_{2}+40 X+1$

Multiple Choice

The optimal solution to the nonlinear model : Minimize: $f(x) =10 X_{2}+40 X+1$ , subject to $X^{3} 3$ , is given by $\mathrm{X}$ equal to

A) -29
B) -39
C) 0
D) 1