A common practice in data partitioning is to partition some percent of the data into the training data set and some percent of the data into the validation data set. Which of the answers below is consistent with the percentage of data in the training data set and the percentage of data in the validation data set?
A(60%, 40%)
B(40%, 60%)
C(30%, 70%)
D(70%, 30%)
A(60%, 40%)
B(40%, 60%)
C(30%, 70%)
D(70%, 30%)