Let W be the set of all 2 x 2 matrices of the form 0 [22] Z 1 Select one: where z > 0. Then: None of them O W is closed under addition, and W is not closed under scalar multiplication, and Wis a subspace of M2x2. W is closed under addition, and W is not closed under scalar multiplication, and Wis not a subspace of M₂x2. OW is closed under addition, and W is closed under scalar multiplication, and W is a subspace of M2x2. W is not closed under addition, and Wis closed under scalar multiplication, and Wis not a subspace of M2x2.

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