PLEASEEEEEEEE!!!!! I need help ASAP

Hello!
A, and C
B is just a number. D is a term. anything with an equal sign is considered a mathematical equation/sentence
I hope this helps, and have a nice day!
Answer:
The answers are A and C
Step-by-step explanation:
A and C are correct mathematical sentences.
B is just a coefficient
Also D is simply the factor of 2 and x or twice a number but not a sentence.
Hope this helps. Que, brainliest is appreciated if I have earned it.