Comorbidity describes $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_,$ and is $\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$

Question $18$ options:

having a single diagnosis; the rule rather than the exception

having multiple diagnoses; the exception rather than the rule

having multiple diagnoses; the rule rather than the exception

when two people have the same diagnosis; the exception rather than the rule