Desert Rock Airport is a private-use airport located three miles (5 km) southwest of the central business district of Mercury, in Nye County, Nevada, United States. The airport is located on the Nevada Test Site and is owned by the United States Department of Energy.
Can we infer the following?
Desert Rock Airport is a tiny private-use airport

Pick from:
[a]. Yes.
[b]. It's impossible to say.
[c]. No.
The answer is:
[b].