Since all of the coins only have 2 sides, heads or tails, the equation will be: 1/2 * 1/2 * 1/2 = Answer. Multiply the probability of getting a head for 1 coin by 3 since there are 3 coins. The probability of having all three heads will be 1/8.
Dang...I literally had this question in Algebra the other day, and got it wrong....but i believe the actual answer was B. It was for sure not D XD. Sorry if I am wrong yet again.