If a = i + 4j, b = 2i - 3j and c = 5i + ...

If a = i + 4j, b = 2i - 3j and c = 5i + 9j then c =

A

2a + b

B

a + 2b

C

a + 3b

D

3a + b

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The correct Answer is:

D

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