When We Compare an Increase in Supply with an Increase

When we compare an increase in supply with an increase in quantity supplied,we know that

A) the former is depicted by a movement along the supply curve and the latter is depicted by a shift of the curve.
B) the former could be caused by a decrease in input costs and the latter would be caused by an increase in the price of the good.
C) both are always caused by a change in demand.
D) both are always caused by a change in the number of market participants.