Which describes the difference between the two sequences? First Sequence: 6, 8, 10, 12, ... Second Sequence: 16, 20, 24, 28, ... The first sequence is arithmetic because there is a common difference of 2. The second sequence is geometric because there is a common ratio of 4. Both sequences are geometric. The first sequence has a common difference of 2, and the second sequence has a common difference of 4. The first sequence is geometric because there is a common ratio of 2. The second sequence is arithmetic because there is a common difference of 4. Both sequences are arithmetic. The first sequence has a common difference of 2, and the second sequence has a common difference of 4.