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22. Which of the following are true with respect to data associations? LO 2-10 a. It is modeled as a dotted arrow. b. The association

22. Which of the following are true with respect to data associations? LO 2-10 a. It is modeled as a dotted arrow.

b. The association arrowhead shows the direction of data flow.

c. Tokens flow across data associations.

d. Gateways can be used to show optional data updates.

e. Both a and b are true.

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