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Subtract (2a - 3b + 4c) from the sum of ...

Subtract (2a - 3b + 4c) from the sum of (a + 3b - 4c), (4a - b +9c)` and `(-2b + 3c -a )`

A

3a + 2b + 4c

B

2a - 2b + 4c

C

3a - 4b - 2c

D

2a + 3b + 4c

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The correct Answer is:
D
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