A disabled employee of a company complains to the company's senior managers that reasonable adjustments are not being made for her disability. The company then informs the employee that her forthcoming promotion will be withheld as they need people in senior roles who can 'get the job done without complaining'.How should the company's conduct in withholding the promotion best be described?
选项：

A:Direct discrimination on grounds of disability.
B:Indirect discrimination on grounds of disability.
C:Failure to make reasonable adjustments for the employee's disability.
D:Harassment of the employee.
E:Victimisation of the employee