Sentence1: Francine noticed that all of her friends wore high heeled shoes. Sentence2: Although she loved how heels looked, she hated how they felt. Sentence3: One day she decided to wear a pair of flats to meet her friends. Sentence4: All of her friends complimented how great they looked. 
 (A) Francine was glad that she wore comfortable  shoes! (B) Francine  retested  the formula for the missing genome.
B