Which of the Following Is a Disadvantage of Programmed Learning

Which of the following is a disadvantage of programmed learning as a training method?

A) Programmed learning methods do not lend themselves easily to computerization.
B) The limited time period of programmed learning modules are disadvantageous to students who prefer to learn at their own pace.
C) Programmed learning approaches are not conducive for encouraging students' active participation in the learning process.
D) With programmed learning, there is no one present to answer a confused learner's questions.
E) Students using programmed learning approaches are often confused as they cannot immediately know whether they are right or wrong.