What's the author's attitude toward this kind of education

A．The handbook is free of charge.
B．The handbook is comprehensive, covering both domestic and outdoors fire preventions.
C．The main feature of this handbook is that it has a checklist.
D．One can find the names of the organizations who can offer relevant help in the handbook:

A．A lot of schools are investing in remote learning because they can get great profits from it.
B．Russell thinks that the distance education is better than the face to-face instruction.
C．Distance education is intended for the working adults, and other people are excluded from it.
D．The Internet revolution is the only answer to explain the popularity of the remote learning.