Refer to the Scenario Below to Answer the Following Questions

Refer to the scenario below to answer the following questions.
Communication Process-New Policy on Overtime (Scenario)
Brett is vice-president of operations at Red Ink Corporation. Due to recent losses, the company has decided to eliminate voluntary overtime work, and to only pay overtime rates on extra work assignments authorized by top management. Brett chose his words carefully as he wrote the memo explaining the new company policy on overtime pay.
-The workers had heard a rumour about the new policy on overtime pay before receiving Brett's memo. The rumour was transmitted through which type of communication channel?

A) formal channel
B) chain network
C) wheel network
D) the grapevine
E) diagonal channel