The Brookville BL12CG is a 4-axle diesel-electric locomotive built by the Brookville Equipment Corporation. The locomotive is designed to meet Tier 4 emissions standards. The first two were delivered to the Central California Traction Company in April 2015.
Can we infer the following?
It is hard to meet Tier 4 emissions standards.

Options are:
a). Yes.
b). It's impossible to say.
c). No.
The answer is:
b).