Which Finding from Palpating the Abdomen of a Young Child

Which finding from palpating the abdomen of a young child indicates pyloric stenosis?

A) abdominal distention, palpable stool over the abdomen, and absence of stool in the rectum
B) olive-shaped mass palpated in the right epigastric area
C) sausage-shaped mass with intermittent pain on palpation of the upper abdomen
D) soft, rounded mass in the left upper abdomen