✪ Choose the correct option.
Analyze the following highly simplified procedure:
Ask: “What type of ticket do you require, single or return?” IF the customer wants ‘return’
Ask: “What rate, Standard or Cheap-day?”
IF the customer replies ‘Cheap-day’
Say: “That will be £11:20” ELSE
Say: “That will be £19:50” ENDIF
ELSE
Say: “That will be £9:75” ENDIF
Now decide the minimum number of tests that are needed to ensure
that all the questions have been asked, all combinations have occurred
and all replies given.