Cellular respiration proceeds in four stages: glycolysis, link reaction, Krebs cycle and electron transport chain. ATP is produced in each step along with other reducing equivalents which gets reduced during the electron transport chain to form ATP.
In the given question, only ATP molecules formed during both glycolysis and Krebs cycle will be 4 ATP as 2 ATP are produced in glycolysis and 2 ATP are produced in the Krebs cycle per two molecules of pyruvic acid.
