. A tornado
a. can have diameter as small as a metre and as large as a
km, or even wider.
b. has a funnel which does not suck everything near it at the base (due to low pressure).
c. has a funnel which does not throw dust, debris and everything out near the top.
d. cannot have a diameter of the order of 10 metres.
Explanation: The diameter of a tornado can be as small as a metre and as large as a km, or even wider.