Ridge pattern question

In the Summer 2007 issue if Knit 1 magazine, there is a tank that has a ridge pattern. the directions read as follows

[Rnds 1 and 2: Knit
Rnd 3: *K2tog; rep from * around
Rnd 4: *P1, pick up and purl one st from row below; rep from * around

Rep rnds 1-4 for the ridge pat.]

My question is this-- when I pick up the stitch from the row below which stitch to I pick up. Since I k2tog on the previous round there are technically two stitchs together. Do I pick up the front one or the back one??

Thank you!!

Since it doesn’t specify–just says one stitch–I’d try picking up the easiest to get and try to be consistent.