Answer:
A
Step-by-step explanation:
A trinomial has 3 terms
This could be A , B or C
A leading coefficient of 3 is the coefficient of the term with the largest exponent in the expression.
This could be A or C
The constant term has no variable attached, that is purely numeric.
The only expression with a constant term of - 5 is A
The expression meeting all the given conditions is A
