Given the derivative of the function ()f(x) is ()=22224f(x)=2x22x24, which of the following statements is true?

Select one:

a.

()f(x) has an inflection point at =2x=2

b.

()f(x) has an inflection point at =1/2x=1/2

c.

()f(x) has a local maximum at =4x=4.

d.

()f(x) has a local minimum at =3x=3

e.

()f(x) has a local minimum at =4x=4