CREATE TABLE table_54801 ("PRR Class" TEXT, "Builderpars_m_singles Model" TEXT, "Build date" TEXT, "Total produced" FLOAT, "Wheel arrangement" TEXT, "Service" TEXT, "Power output" TEXT)

What is the PRR class for wheel arrangement c-c and total less than 15?
SELECT "PRR Class" FROM table_54801 WHERE "Wheel arrangement" = 'c-c' AND "Total produced" < '15'
SELECT "PRR Class" FROM "table_54801" WHERE "Total produced" < '15' AND "Wheel arrangement" = 'c-c'