Answer:
The entire $100,000 sales price can be currently recognized since most of the conditions have been met.
Step-by-step explanation:
Remember, it was mentioned that Silverstone accepted the terms of the sales contract that states "SilverStone takes back all unused emission systems." But a new point was mentioned that four out of the five conditions were met by Silverstone which could grant them 95% percent of sales.
Thus, they can recognize the sales since most conditions were met.