Question: All vectors are in Rⁿ. Check the true statements below:

_ A. If x is orthogonal to every vector in a subspace W, then x is in WÁ

_ B. For any scalar c, ºcvº= cºvº.

_ C. If ºuº²+ºvº² = ºu+vº², then u and v are orthogonal.

_ D. For an m x n matrix A, vectors in the null space of A are orthogonal to vectors in the row space of A.

_ E. u· v- v·u = 0.