Which of the following statements about disability discrimination law is NOT true?

A、The requirements only effect employers of more than
20 employees;
B、Employers must adjust working arrangements or the physical features of premises to remove any disadvantage to disabled
people;
C、For an
individual to be defined as a disabled
person,
the physical or mental
impairment must have an adverse effect of more than
12
months' duration;
D、Public bodies have additional duties to protect and
promote equality for disabled people