Let S = {" in M2x2; a + 2d = 0 and b – 2c = 0} with the standard operations in M2x2. Which of the following is true? S is a subspace of M2x2 12 E S the above is true the above is true S is not a...

Extracted text: Let S = {" in M2x2; a + 2d = 0 and b – 2c = 0} with the standard operations in M2x2. Which of the following is true? S is a subspace of M2x2 12 E S the above is true the above is true S is not a subspace of M22 since 8 e s the above is true None of these