Libby wishes to access data on how consumers in general shop online. She has found relevant data sets two different sources

Data from an online survey of 100 people which contained ten questions that could be answered either Yes or No

Data from in - depth face to face interviews with 100 people

What is the problem for Libby with the data from these two sources?

OA It lacks comparability as different definitions were used

OB it lacks comparability as different measurement tools were used

OC It lacks accuracy are different definitions were used

OD it lacks accuracy as different measurement tools were used