On May 10 , Sandhill Co. buys $1,050 of merchandise on account from Teal Mountain Supply, terms 2/10, n/30. Sandhill pays Teal Mountain on May 18. The buyer uses the perpetual inventory method. a. Prepare the entry to record the purchase of merchandise. (If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts. Credit account titles are automatically indented when the amount is entered. Do not indent manually. List debit entry before credit entry.) b. Prepare the entry to record the payment by Sandhill, if Sandhill pays within the discount period. (If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts. Credit account titles are automatically indented when the amount is entered. Do not indent manually. List all debit entries before credit entries.)