You are given a paragraph (Passage), a question (Question) and two answer options (Option1 and Option2). Your task is to choose the correct answer to the question based on the passage. Answer of the question cannot be found directly from the passage, it is indirectly indicated in the passage. Do not answer with words other than the two options, and do not answer with option titles(e.g. "option1" or "1" are not acceptable answers.)

Passage: Last week I went to the Dollar Store to pick up some detergent for my laundry . I collected the detergent and brought it to the front counter at the store . I sat the detergent on the conveyor belt and waited my turn for the cashier to ring up my purchase . She slid the detergent containers across the scanner to pick up the code on the product to determine the price . I pulled my credit card out of my wallet and slid it through the credit card machine . When the machine registered my card , I pressed the green button for credit . It asked me to approve the cost of my purchase and I did so pressing the green button . The cashier handed me my receipt and I put it in my wallet along with my credit card . I left the store with my detergent ready to do my laundry . Question: When was the price under twenty dollars? Option1: when they bought the chips Option2: when they went shopping at the Dollar Store
when they went shopping at the Dollar Store