Input transformation in mapplet

Select the statement below that is true.

Choose Answer

(A)
A mapplet that does not contain an Input transformation is always an active mapplet.
(B)
A mapplet that does not contain an Input transformation is an active mapplet only if it contains at least one active transformation.
(C)
A passive mapplet can be made into an active mapplet by adding one or more Joiner transformations to the mapplet.
(D)
A passive mapplet can be made into an active mapplet by adding one or more Lookup transformations to the mapplet.