Based on the Following Abstract Taken from the Journal Trends

Multiple Choice

based on the following abstract taken from the journal Trends in Neuroscience and Education (citation below) . The authors of the paper examined two different methods of mathematics instruction and used brain-imaging techniques to demonstrate how the methods might influence learning. Instructors are advised to use the reference below to retrieve the original abstract for their use.
Wirebring, L. K., Lithner, J., Jonsson, B. , Liljekvist, Y., Norqvist, M., & Nyberg, L. (2015) . Learning mathematics without a suggested solution method: Durable effects on performance and brain activity. Trends in Neuroscience and Education, 4(1) , 6-14.
-From the abstract, what can we know about brain activity in the angular gyrus of participants?

A) There were larger spikes in the brain waves recorded from the angular gyrus of participants who had created this solution method themselves as compared to participants who were presented with a solution method.
B) There were greater blood-oxygen-level changes in the angular gyrus of participants who had created the solution method themselves as compared to participants who were presented with a solution method.
C) There were smaller blood-oxygen-level changes in the angular gyrus of participants who had created the solution method themselves as compared to participants who were presented with a solution method.
D) There were smaller spikes in the brain waves recorded from the angular gyrus of participants who had created the solution method themselves as compared to participants who were presented with a solution method.