The Reason for Which Worker's Disability Insurance Can Potentially Have

The reason for which worker's disability insurance can potentially have adverse effects on work incentives is that:

A) the income that it provides enables one to reach a certain income level without any work obligation.
B) the opportunity cost of leisure increases.
C) the taxes that finance the benefits can have negative effects on labour demand.
D) the recipient is allowed to work as many hours as he/she can without losing any of the benefits.
E) All the answer choices are correct.