Answer:
A. The sum 245.75 + (–368.45) = –122.70 means that Robbie still owes $122.70 for the bass guitar.
Explanation:
Since Robbie returned a guitar that cost $245.75, he will be recieving a positive amount of money, being a gain of money; then he decides to buy a bass guitar, which costs $368.45, which makes it a loss of money, thus A would be the correct answer.