Sentence1: Mom asked me to go pick up some things at the grocery store. Sentence2: I decided to take my bicycle to the store instead of walking. Sentence3: I met up with a friend and offered her a ride on my bicycle. Sentence4: As we were riding along, my bicycle broke in half. 
 (A) I realized that my bicycle had only been suitable for one rider. (B) I carelessly threw my used Kleenex in the gutter.
A