A martial arts competition starts with a number of participants who each participate in rounds of competition. The function f(x)=128(0.5)x represents the number of participants remaining in the competition after x rounds. Which statement is true?

The competition starts with 64 participants prior to the first round and eliminates 5% of the remaining participants each round.

The competition starts with 64 participants prior to the first round and eliminates 5 % % of the remaining participants each round.

The competition starts with 64 participants prior to the first round and eliminates 50% of the remaining participants each round.

The competition starts with 64 participants prior to the first round and eliminates 50 % % of the remaining participants each round.

The competition starts with 128 participants prior to the first round and eliminates 5% of the remaining participants each round.

The competition starts with 128 participants prior to the first round and eliminates 5 % % of the remaining participants each round.

The competition starts with 128 participants prior to the first round and eliminates 50% of the remaining participants each round.

The competition starts with 128 participants prior to the first round and eliminates 50 % % of the remaining participants each round.