What Is the Difference Between Cross and Self Fertilization

Multiple Choice

What is the difference between cross and self fertilization?

A) In cross-fertilization the gametes from one plant are used to fertilize the gametes of another plant
B) In cross-fertilization the gametes from one plant are used to fertilize the gametes from the same plant
C) In self-fertilization the gametes from one plant are used to fertilize the gametes from another plant
D) In cross-fertilization insects are used to pollinate the plants while in self-fertilization the investigator pollinates the plants