Find the x-values of all points where the function has any relative extrema. Find the value(s) of any re
f(x)=6+(5+3x)²/³
Select the correct choice below and, if necessary, fill in any answer boxes within your choice.
A. There are no relative maxima. The function has a relative minin (Use a comma to separate answers as needed.)
B. There are no relative minima. The function has a relative maximum of at x= (Use a comma to separate answers as needed.)
C. The function has a relative maximum of at x= and a relative minimum of at x= (Use a comma to separate answers as needed.)
D. There are no relative extrema.