Self pollination which involves two different flowers of the same plant is called
Geitonogamy is a type of self-pollination. It is sometimes distinguished from the fertilizations that can result from it, geitonogamy. In the flowering plants, pollen is transferred from a flower to another flower. And in animal pollinated systems it is accomplished by a pollinator visiting multiple flowers on the same plant.
Geitonogamy is functionally cross-pollination involving the pollinating agent. And genetically it is similar to autogamy. Geitonogamy is not possible for strictly dioecious plants.
The correct option is B.