Being in a Good Mood Does Not Reduce Our_______, but Reduces

Being in a good mood does not reduce our_______, but reduces our________.

A) motivation to do hard cognitive work, incentive for doing hard cognitive work
B) incentive to do hard cognitive work, motivation for doing hard cognitive work
C) motivation to do hard cognitive work, capacity for doing hard cognitive work
D) capacity to do hard cognitive work, motivation for doing hard cognitive work