A French sauce spoon or saucier spoon is a spoon that is typically the size and shape of a dessert spoon, but with a flattened bowl that has a thinner edge and a small notch on one side. As the name suggests, a French sauce spoon is used to eat the sauce accompanying a dish. Such a spoon may be referred to simply as a sauce spoon, but this can also refer to a spoon used to serve sauce.
A French sauce spoon can also be used as a dessert spoon.
It's neither definitely correct nor definitely incorrect because the text states that spoon that is typically the size and shape of a dessert spoon, but does not specify if it can also be used as a dessert spoon. I think the system was fooled because my answer was very similar to the context.