Why does the charging rate in a Level $3$ charging system quickly peak$$before it gradually slows down?

Question $6$ options:

A Level $3$ charging station houses more powerful AC to DC converters than Level $1$ or Level $2$ chargers

Level $3$ charging times are dependent on other factors such as weather conditions, driving style, and the onboard current converter,

Level $3$ charging requires a$$dedicated$$charging station$$usually$$found in public or commercial parking spaces

The electric vehicle battery's ability to accept power decreases as it gets closer to a full charge