Final answer:
The B/AR/CR process supports marketing managers by managing revenue collection and is complementary but distinct from the order entry/sales process.
Step-by-step explanation:
The functions of the B/AR/CR process include collecting amounts due from customers, and thus, it supports the problem-solving processes of marketing managers by ensuring that revenue is captured and managed properly. This process is complementary to the order entry/sales process, as it ensures payments for sales are collected. However, it is distinct in its role within the business cycle and should not be considered either identical or unrelated to the order entry/sales process.