Sentence1: Kim saw a mother unloading her shopping cart in a parking lot. Sentence2: The mother's little toddler was sitting in the cart's child seat. Sentence3: Suddenly, while the mother was turned, the cart started rolling away! Sentence4: Kim, realizing the child was in great danger, lunged toward the cart. 
 (A) KIm breathlessly saved the child. (B) Kim saved the cart but let the child go.
A