While identifying scenarios for the use case copy A4 A4 for a new copier, the following scenarios were identified:Basic

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While identifying scenarios for the use case copy A4 A4 for a new copier, the following scenarios were identified:Basic scenario: single side to single sideDeviations: single side to double side, copy of a set, copy using the automatic document feederFailures: no paper in paper tray, paper jam, out of staplesDuring interviews with both development and end-users it has been established that the failure scenarios can occur during the basic scenario and during each of the deviations.How many test cases will be needed to achieve full coverage both for valid and invalid situations?[K3] 2 credits

A. 10
B. 12
C. 16
D. 20