See the multi-choice question below:

Sentence 1: 4. If other studies relevant to the issue are available, havetheir results been presented and reconciled with the case study findings?

Sentence 2: Results cannot be assessed do to implosion of the earth.

If the first sentence is true, then is the second sentence true?
OPT:
a). yes;
b). it is not possible to tell;
c). no;
c).