What is the best way to correct the dangling modifier in this sentence:

Though only in Grade 3, the school librarian realized that Kristen could read as well as many junior high students.

A. Though the librarian was only in Grade 3, she realized that Kristen could read as well as many junior high students.


B.Though Kristen was in junior high, she could read as well as many students in Grade 3.

C.The school librarian realized Kristen, though only in Grade 3, could read as well as many junior high students.