Recall that arrays use 0-based indexing. For an array of 100 elements, the valid array indexes go from 0 through 99, but not to 100. Each array also has a .length member variable that gives its length. Assume you have this array already declared and allocated:

double[] atomicWeights = new double[118];

Which of the following is/are valid array indexing?

atomicWeights[-1];

atomicWeights[99];

atomicWeights[atomicWeights[0]];

atomicWeights[atomicWeights.length - 1];

atomicWeights[117];