please help. the options forthe select button are 0,1,2,3 maximumand minimum

The given polynomial is,
[tex]y=x^4-17x^2+16[/tex]The graph of the function can be drawn as,
From the graph it is evident that the biquadratic equation has 4 real roots with 2 local minimas and 1 local maxima.
Thus, 1 local maximum and 2 local minimum is the correct options.