The results obtained by four students, each performing a set of four titrations with the same solution under identical conditions, are given below. If the expected titre value is 20.0 mL, the set of data (mL) with good accuracy and poor precision is

A

19.9, 20.0, 20.1, 19.9

B

18.1, 18.2, 18.0, 18.1

C

17.9, 18.1, 21.5, 21.0

D

20.0, 19.8, 19.4, 20.2