19. A company sells furniture for home assembly. Their largest bookcase has shelves should be 115 cm, with a tolerance of 0.6 cm (115 cm ± 0.6 cm). A set of six shelv had lengths of 115.2 cm, 114.9 cm, 115.0 cm, 114.3 cm, 114.7 cm, and 115.7 cm. Which, if any, of the shelves are not within the specified tolerance?

All of the shelves are within the tolerance.

Only the 114.3 cm shelf

Only the 115.7 cm shelf

Both the 114.3 and 115.7 cm shelves.​