How do courts generally rule in cases involving ambiguous contract language that makes it unclear what is being assigned or delegated?

A$)$ When ambiguous language is used, the court usually considers the assignment to be voidable.

B$)$ When ambiguous language is used, the court usually considers the assignment to be of both rights and duties.

C$)$ When ambiguous language is used, the court usually considers the assignment to be of duties but not rights.

D$)$ When ambiguous language is used, the court usually considers the assignment to be void.

E$)$ When ambiguous language is used, the court usually considers the assignment to be of rights but not duties.