What does “thin is 'in', and fat is 'out'”mean A: Thin is "inside”, and fat is “outside". B: Thin is "diligent”, and fat is "lazy". C: Thin is "youthful, and fat is "spiritless". D: Thin is "fashionable”, and fat is "unfashionable”.

9. In the U. S., thin is "in", fat is "out", this means _______. A: thin is "inside", fat is "outside" B: thin is "diligent", fat is "lazy" C: thin is "youthful", fat is "spiritless" D: thin is "fashionable", fat is "unfashionable"