【单选题】

What does this article mainly concern
A．The article suggests that it is a concept that lacks clarity for line managers in terms of how it should be implemented within the anti-discrimination legal framework,

B．This article is mainly about present particular dilemmas for line management in terms of how to respond to individual differences.
C．This article examines how operational managers are interpreting the management of diversity in practice.
D．This article concerns that employers need to take greater account of the tensions facing line managers.