Which of the following is NOT the finding of the research?

A、Gelatin-carrageenan mixture with transglutaminase and potassium crossing linkage is an ideal fat substitute.;
B、Few research has been conducted on Gelatin-carrageenan mixture as a food substitute.;
C、The addition of KCl solution could enhance the hardness of the mixture.;
D、The addition of TG enzyme could significantly raise the hardness of the mixture.