1. Igneous intrusion Y formed.
2. The shale layer was deposited.
3. Igneous intrusion X formed.
4. The limestone layer was deposited.
5. The mudstone layer was deposited.
B 1. The mudstone layer was deposited.
2. The limestone layer was deposited.
3. The shale layer was deposited.
4. Igneous intrusion Y was forced onto the mudstone, limestone, and shale.
5. Igneous intrusion X was forced onto the mudstone, limestone, and shale.
C 1. Igneous intrusion X formed.
2. Igneous intrusion Y formed.
3. The shale layer was deposited.
4. The limestone layer was deposited.
5. The mudstone layer was deposited.
D 1. The layer of mudstone was deposited.
2. The layer of limestone was deposited.
3. Igneous intrusion Y was forced onto the mudstone and limestone.
4. The shale layer was deposited.
5. Igneous intrusion X was forced over the mudstone, limestone, and shale
