Let $f(x)=x^3, x \in[-1,1]$. Then which of the following are correct?
- A' $f$ ' has a minimum at $x=0$.
- B' $f$ ' has the maximum at $x=1$.
- C' $f$ ' is continuous on $[-1,1]$.
- D' $f$ ' is bounded on $[-1,1]$.
✓ Correct answer: B
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