Please help with this practice problem I am having difficulty with. I will leave a review and thumbs up, thank you in advance!

Please describe your reasoning for if the following statement is True/False or Ambiguous.

The momentum effect is more pronounced using returns in the past 1-6 months instead of 7-12 months, consistent with the underreaction hypothesis. The momentum effect is more pronounced using returns in the past 1-6 months instead of 7-12 months, consistent with the underreaction hypothesis