CREATE TABLE table_6638 ("Series Ep." TEXT, "Episode" FLOAT, "Segment A" TEXT, "Segment B" TEXT, "Segment C" TEXT, "Segment D" TEXT)

What segment A is associated with a Segment C of paint chip cards?
SELECT "Segment A" FROM table_6638 WHERE "Segment C" = 'paint chip cards'
SELECT "Segment A" FROM "table_6638" WHERE "Segment C" = 'paint chip cards'