Let u = ⟨9, –2⟩, v = ⟨–4, 3⟩, and w = ⟨5, 1⟩. Kelcy incorrectly determined 3u – 5(v + w) to be ⟨32, –26⟩. Review her steps as shown.3u – 5(v + w)3⟨9, –2⟩ – 5[⟨–4, 3⟩ + ⟨5, 1⟩]⟨27, –6⟩ – 5[⟨–1, 4⟩]⟨27, –6⟩ + ⟨5, –20⟩⟨32, –26⟩
A
She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.B
She did not correctly distribute 3 to both components of u.C
She should have distributed –5 to both v and w before adding.D
She should have subtracted ⟨27, –6⟩ and ⟨5, –20⟩, rather than adding.