See the multi-choice question below:

Sentence 1: It's said to weigh 2,000 tons (1.8 million kg/4 million pounds).

Sentence 2: It weighs less than 100 tons.

If the first sentence is true, then is the second sentence true?
Select from the following.
(a). yes;
(b). it is not possible to tell;
(c). no;
(c).