Q 3210191910.     IF `A = [ (4 i - 6 , 10 i ) , ( 14 i, 6 + 4 i ) ]` and `k ==1/(2i)` , where ` i = sqrt(-1)` , then `k A ` is equal to

NDA 2017 Paper 1 Sept
A

`[(2 +3i, 5 ), ( 7 ,2 -3 i)]`

B

`[(2 -3i, 5 ), ( 7 , 2 +3 i)]`

C

`[(2- 3 i, 7 ), ( 5 , 2 + 3 i )]`

D

`[(2 + 3 i, 5 ) , ( 7 , 2 + 3 i)]`

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