This question has been discussed in this forum. I bring it up here again because I am not convinced by the agreed answer, which seems to be A. I think it should be C. Any comments? Anyone who got 100% can tell us the correct answer?
Referring to the sequence diagram in Figure Interaction, what methods MUST be implemented by the Account class?
a) withdraw, checkBalance
b) withdraw, log, checkBalance
c) withdraw, checkBalance, acknowledge
d) withdraw, acknowledge
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http://certify.torolab.ibm.com/figures/test486F15.gif )