What Was One of the Results of the Guyer and Colleagues

What was one of the results of the Guyer and colleagues' (2009) study, where teenagers were imaged with fMRI equipment while they thought they were participating in a networking task with other teenagers (in reality, the study was rigged such that they were automatically provided with positive or negative feedback) ?

A) When the adolescents were told that other teenagers were interested in them, areas of their brains known to be sensitive to rewards were activated.
B) When the adolescents were told that other teenagers were interested in them, no areas of their brains were activated.
C) When the adolescents were told that other teenagers were interested in them, areas of the brain that are activated during highly stressful events were activated.
D) When the adolescents were told that other teenagers were interested in them, the prefrontal cortex was fully activated.