The dilution water used in the toxicity tests may be natural seawater, hypersaline brine (100 ) prepared from natural seawater, or artificial seawater prepared from commercial sea salts, such as FORTY FATHOMSa or HW MARINEMIXa, if recommended in the method.

Does it follow that "The dilution water in the toxicity tests can be natural saltwater."?
Available choices:
* yes
* it is not possible to tell
* no
yes