Why is the set {91 +124t² - 61t³, 66 − 58t +93t², 22 + 248t — 87t² } not a basis for P3(R)? Select all that apply. The set is linearly dependent. ✓ It is not a spanning set. The set contains too many elements. ✓ The set contains too few elements. It is not a subset of P3(R)

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