The nth statement in a list of 100 statements is Exactly n of the statements in this

Question:

The nth statement in a list of 100 statements is "Exactly n of the statements in this list are false."
a) What conclusions can you draw from these statements?
b) Answer part (a) if the nth statement is "At least n of the statements in this list are false."
c) Answer part (b) assuming that the list contains 99 statements.