I would say D. because of how scrawny is a negative word.
An example:
Skinny, thin, and slender. These three words all mean having less weight on one's body than what might be considered average. But the connotations differ since the suggested meanings of skinny and thin are often more negative than slender, with skinny potentially the most negative of the three.
It is the same for scrawny, thin, petite, and little.