How Would You Define Convergence

How would you define convergence?

A) tendency for gaps between industrial countries' per-capital incomes to narrow
B) tendency for gaps between all countries' per-capital incomes to narrow
C) the theory that a crisis in a low-income country will spread to all countries, regardless of debt structure
D) the theory that a crisis in a low-income country will spread to only those countries which had lent money to the original country
E) tendency for the world distribution of income to be persistently unequal