as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
assign the following percentage grades: 90%, 80%, 75%
user
a grade of 90% corresponds to an a, 80% corresponds to a b, and 75% corresponds to a c.
assistant