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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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