What is the rising action in the short story, "A&P"?

The rising action of John Updike's short story,
"A&P," begins almost immediately after Sammy notices the three girls dressed in
bathing suits enter the supermarket. Apparently, this A&P rarely has customers
like the three girls: "Queenie," the chunky one, and the tall one. They are
underdressed, either going to or having just come from the beach, which is at least five
miles away. Sammy lustfully eyes the girls as they saunter down the aisles for a snack.
He and his buddy, Stokesie, trade remarks about the teenage girls, before they finally
head to the checkout counter, where Sammy is ready and waiting. When Queenie pulls a
dollar bill from her bikini top, Sammy is in heaven.