Let W be the set of all 3 x 3 matrices of the Го X 0 form y 0 X 0 0 I where y < 0. Then: Select one: OW is not closed under addition, and Wis closed under scalar multiplication, and W is not a subspace of M3x3- O W is closed under addition, and Wis closed under scalar multiplication, and W is a subspace of M3x3- O None of them O W is closed under addition, and W is not closed under scalar multiplication, and W is a subspace of M3x3- O W is closed under addition, and W is not closed under scalar multiplication, and W is not a subspace of M3x3.

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