Order the following events observed during muscle contraction in the correct sequence
1. The sarcomere shortens
2. ATP is hydrolyzed
3. Ca2+ binds to troponin
4. ATP binds to myosin
5. Myosin contracts F-actin
6. F-actin moves
7. Tropomyosin moves
8. Ca2+ is released from the sarcoplasmic reticulum
1
8-4-3-7-2-5-1-6
2
4-8-7-2-3-5-6-1
3
4-8-3-7-5-6-2-1
4
4-8-3-7-2-5-6-1