Question 1 (15 marks) Assume the coin denomination in Singapore comes in $1.00, $0.50, $0.20 and $0.10 only. Implement a model to calculate the minimum coin combination required for a given change amount. For example, a change of $0.70 will require 1 x $0.50 and 1 x $020 (and not 1 x $0.50 + 2 x $0.10). Using your model to generate test cases for change amount in the range of $0.10, $0.20, $5.00