At this point in the passage, the author wants to mention specific evidence indicated by the graph. Which statement is most justified by the data in this graph? 

A) The gamma power in the RH a STG for the insight solution is more than double that for the non-insight solution. 

B) This increase in activity seems to begin about 0.3 seconds prior to the button-press response, and to lasts about 1 second. 

C) The gamma activity for the insight solution appears to be roughly equivalent to that for the non-insight solution until the instant the button is pushed. 

D) This increase in activity seems to begin about 0.3 seconds after the button-press response, and to last about 0.5 second.