Suppose the expected value of a measurement is 4 cm.

Which set of measurements is the MOST precise?

OA) 2 cm, 2 cm, 4 cm, 6 cm

OB) 3. 0 cm, 2. 9 cm, 3. 1 cm, 3. 1 cm

OC) 3. 5 cm, 4. 0 cm, 4. 5 cm, 5. 0 cm

OD 6 cm, 8 cm, 5 cm, 9 cm