Josue Listened to a Speech on the Radio Advocating the Increased

Josue listened to a speech on the radio advocating the increased use of automobiles that are not reliant on fossil fuels.According to the research in the textbook,one would expect the sleeper effect to be greatest if Josue was asked about his views on the issue at which of the following times?

A) immediately
B) that same day
C) a few weeks later
D) a few months later