Which of the following elementary operations has been applied to the m – McqOptions

MCQOPTIONS

1.	Which of the following elementary operations has been applied to the matrix A= ( begin{bmatrix}8&5 2&8 end{bmatrix} ) such that the new matrix is ( begin{bmatrix}12&21 2&8 end{bmatrix} )?
A.	R<sub>1</sub> R<sub>1</sub>-2R<sub>2</sub>
B.	R<sub>1</sub> 2R<sub>1</sub>+R<sub>2</sub>
C.	R<sub>1</sub> R<sub>2</sub>+R<sub>1</sub>
D.	R<sub>1</sub> R<sub>1</sub>+2R<sub>2</sub>
Answer» E.

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