Consider the function g(x)=2x2−sinx on the interval [0,4]. Which statement correctly describes the absolute extrema of g on this interval?
a) g attains its absolute maximum at the unique critical point c in (0,4).
b) g attains its absolute minimum at x=0 and its absolute maximum at x=4.
c) g attains its absolute minimum at the unique critical point c in (0,4).
d) g attains its absolute minimum at both endpoints x=0 and x=4.