Pang and Ruch (2019) compared a mindfulness based stress reduction intervention (MBSR) to an MBSR plus character strengths intervention (MBSP) in the workplace. Which of the following study outcomes is TRUE in regard to job satisfaction?

a. There was an effect on job satisfaction for MBSR but not for MBSP.
b. There was an effect on job satisfaction for MBSP but not for MBSR.
c. There was no effect on job satisfaction for either MBSR or MBSP.
d. There was an effect on job satisfaction for both MBSR and MBSP.