Difference In Calc Classes

Hey guys,
Can anyone explain the difference between Calc 121 and Calc 125? I am just confused as to which one I should take; I am a psychology major, if that helps.

MATH 121 (Calculus for Science and Engineering I)is for Engineering/STEM majors…
MATH 125 (Math and Calculus Applications for Life, Managerial, and Social Sci I) is for liberal arts .
You should take 125. You can take 121 but then you are competing with Engineers.

http://math.case.edu/undergraduate-programs/undergraduate-courses/

http://bulletin.case.edu/undergraduatestudies/casdegree/

@bopper thanks for your advice!