In Questionnaire Design,a Question Such As,"When Will the Technology Exist

In questionnaire design,a question such as,"When will the technology exist to allow humans to live on Mars?" suffers from the problem of a question

A) that is one-sided,presenting only one side of an issue.
B) that respondents are reluctant to answer because the information is sensitive.
C) that steers respondents to a particular response.
D) that asks two questions at once.
E) that is complex and something respondents may be unfamiliar with.