Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: We were heading out for breakfast at Denny 's with my brother ( it was Labor Day and Denny 's was the only restaurant open for breakfast at the time ) . So , I decided it would be a good idea to go to Wal - Mart and buy a more expensive test and try again to be sure . I ended up taking that test in the bathroom at Denny 's and David , Steven , and I all sat at the booth watching for the lines to develop . This time I got 2 lines ( albeit faint ) and we were pretty sure at that point that I was pregnant .

Question: Prior to their arrival at Denny 's what type of test did they take ?
A pregnancy test
A less expensive test.