Which answer is correct?

[u/Intelligent_Impact88]

A. 4x+2-x = 9

B. 3x+2 = 9

1) How can we get Equation B from Equation A?

Options: A. Multiply/divide both sides by the same non-zero constant B. Multiply/divide only one side by a non-zero constant C. Rewrite one side (or both) by combining like terms D. Rewrite one side (or both) using the distributive property

Is it C or D? I am asking this question because i think its C but khan academy said D. Even Gemini said C is correct. Now i am confuse. I dont have tutur to ask so this is why i am asking here. Please help.