12x - 12 - 4x
To solve this question, we will have to collect like terms
12x - 4x - 12
=> 8x - 12
we can further factorize the answer 8x - 12
4 is common to both 8x and 12
8x - 12 = 4 (2x - 3)
=> 4(2x - 3)
Options B and C are correct
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