If a Coin Is Balanced So That P(Heads) = P(Tails)

Multiple Choice

If a coin is balanced so that p(Heads) = p(Tails) = 1/2, then which of the following outcomes is more unlikely to occur?

A) 12 Heads in 16 tosses (75% Heads)
B) 30 Heads in 40 tosses (75% Heads)
C) 75 Heads in 100 tosses (75% Heads)
D) The other 3 outcomes are all equally likely to occur.