Answer:
Your answer would most likely be A.
Explanation:
A is an expression, it does not include an equal sign in the problem.
B includes a equal sign, it is not an expression it is an equation.
C also includes a equal sign, therefore not an expression.
B is not and expression, even though it does not have a equal sign, it is not a expression. When using "<" its just saying that 5 times a number is more then 2.
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I hope this is correct! Im only in 8th grade, don't come at me if this is incorrect! That would be my guess.
-- ~Aslina~