Write the Word or Phrase That Best Completes Each Statement $M$

Multiple Choice

Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
-Let $M$ be a $6 \times 6$ matrix. Which of the following statements are true?
(i) $\mathrm { I } _ { 6 } \mathrm { M } = \mathrm { M }$
(ii) $\mathrm { I } _ { 6 } + \mathrm { M } = \mathrm { M }$
(iii) $\mathrm { MI } _ { 6 } = \mathrm { I } _ { 6 }$
(iv) $\mathrm { MI } _ { 6 } = \mathrm { M }$

A) (i) , (iii) , (iv)
B) (ii) , (iii)
C) (i) , (ii) , (iii) , (iv)
D) (i) , (iv)