A Researcher Found a Beautiful Plant While Traveling in Alaska

A researcher found a beautiful plant while traveling in Alaska and collected its seeds.When she came back to Florida,she soaked some seeds in pure water and some in water with hormone gibberellin.When she put seeds to grow in soil,only seeds soaked with gibberellin germinated.The seeds that were soaked in pure water did not germinate because of the

A) presence of pericarp.
B) low concentration of ABA.
C) absence of nutrients in pure water.
D) Any of the above might have reduced germination rate.