Which of the following is the correct order of the decreasing order of abundance of the elements in earth's crust?

The elements common to the Earth's crust in declining order of abundance are: 

• Oxygen: Oxygen is the largest component of the Earth's crust. It accounts for 46.6 percent. 
• Silicon: Silicon is the second most common and abundant component in the Earth's crust. It makes up the concentration of 27.7%. 
• Aluminum: Aluminum is the third most widespread and abundant element in the Earth's crust. It has a concentration of 8.1%.