For Questions 1 through 4 refer to the following matrix M: 2 M=14 5 6 L7 8 9) 1. Which of the following commands will return a value of 2? 1. M(:,2) 2. M(1:2) 3. M(1,2) 4. M(2) 0 1 02 O O4 QUESTION 2 2. Which of the following commands will return the row vector [4 5 6)? 1. M(:,2) 2. M:2) 3. M(4,5,6) 4. M(2,:) 0 1 O 2 O 3 O4 QUESTION 3 3. Which of the following commands will return the column vector 1. M(:,2) 2. M(:2) 3. M(2,5,8) 4. M(2,:) O2 O 3 04