Which of the following relations is incorrect

1.	Which of the following relations is incorrect
A.	\[(A+B+....+l{)}'={A}'+{B}'+....+{l}'\]
B.	\[(AB....l{)}'={A}'{B}'....{l}'\]
C.	\[(kA{)}'=k{A}'\]
D.	\[(A{)}'=A\]
Answer» C. \[(kA{)}'=k{A}'\]

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Which of the following relations is incorrect

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