Japanese Law Prohibits the Storage of More Than 50 Pounds

Japanese law prohibits the storage of more than 50 pounds of explosive at any single site in the nation.Every night Universal Studios Japan hosts a fireworks display.The theme park recently came under government investigation when allegations were made that the park was detonating more than 50 pounds of explosives in its nightly fireworks displays.
-Refer to Fireworks.What would be required to discover a way to produce grand fireworks displays with smaller amounts of explosives?

A) technological research
B) transactional research
C) applied research
D) synergistic research