Answer: A (scalene triangle)
Step-by-step explanation:
The three sides of the given triangle are unequal. The size of the angles in degrees are not given.
Therefore, the triangle is a scalene triangle because none of the sides are equal.
It is not an isosceles triangle because in an isosceles triangle, two sides are equal.
It is not an equilateral triangle because in an equilateral triangle, three sides are equal.
It is not an acute triangle because we are considering the side lengths of the triangle. In an acute triangle, the three angles are lesser than 90 degrees. This means that an equilateral or isosceles triangle can also be an acute triangle.
So the correct option is A