Regarding vocabulary, mark the only statement which can be considered true: Receptive vocabulary is smaller than productive vocabulary in any lang...

Regarding vocabulary, mark the only statement which can be considered true:

Receptive vocabulary is smaller than productive vocabulary in any language.
There are no differences between productive and receptive vocabulary
Productive vocabulary is more used in the speaking and writing skills.
Productive vocabulary is used only in the listening skill.
Productive vocabulary includes listening, writing, reading and speaking skills at the same time.
a) 3
b) 2
c) 1
d) 4
e) 5