Reading comprehension

　　Katy and Sandy are twins．They look the same．They both have long hair and big eyes．They are medium height and they have medium build．They live in a town．Katy is older than Sandy．She likes living in town very much．Katy thinks living in town is more interesting than living in the country．She likes the lights(灯)in town．She thinks the lights at night are more beautiful than the stars(星星)．She likes to read, and reads more quickly than Sandy．Often Katy reads until late at night．Sandy likes the country better．She likes to visit her Aunt Peggy．She often helps her aunt with her work．Sandy likes to run．She runs faster than Katy．In the country, Sandy can run longer than in town．She also thinks running in the country is the most exciting thing to do．

　　请根据短文的描述，分辨出哪张照片是Katy，哪张照片是Sandy。并在照片下面的括号中标明K(Katy)或S(Sandy)。