Task: Instance Description Understanding (ontology: Sciences/Computer_Science)

Which of the following definitions best describes the instance '4: bed ridden'?

A. An Eastern Cooperative Oncology Group score value specification indicating a patient is symptomatic and is bed ridden.
B. An Eastern Cooperative Oncology Group score value specification indicating a patient is symptomatic and in bed for more than 50% of the day but is not bed ridden.
C. An Eastern Cooperative Oncology Group score value specification indicating a patient is asymptomatic.
D. An Eastern Cooperative Oncology Group score value specification indicating a patient is symptomatic but is in bed for less than 50% of the day.

Answer: An Eastern Cooperative Oncology Group score value specification indicating a patient is symptomatic and is bed ridden.