Final answer:
The value 12 is a coefficient, and the value 30 is a constant in the expression (12h+30).
Step-by-step explanation:
According to the expression 14(12h+30), the value 12 is a coefficient and the value 30 is a constant in the expression (12h+30). Therefore, the correct statement is A) The value 12 is a coefficient, and the value 30 is a constant in the expression (12h+30).