Exhibit 15.1 The Following Questions Employ the AON Network and Partial Spreadsheet

question 7

Multiple Choice

Exhibit 15.1
The following questions employ the AON network and partial spreadsheet below.
-Activity-on-Arc (AOA) networks do not allow multiple arcs with common start and finish nodes. If this must be represented, how is an AOA network modified?

• A) The network is redrawn into an Activity-on-Node network.
• B) Connect the arcs to the node using an IFERROR() function.
• C) Phantom (dummy) activity arcs are added.
• D) Zero duration activity arcs are added.