Using the Data Depicted in the Figure Above, Which of the Following

Using the data depicted in the figure above, which of the following occurred when comparing affect following a 10-minute walk (Post-0') to the pre-walk (Pre) affect? (Use only the Walking group data.)

A) Activation increased; valence became more negative
B) Activation increased; valence became more positive
C) Activation decreased; valence became more negative
D) Activation decreased; valence became more positive