Here's a problem to solve: An aluminum ion has a charge of +3, and an oxide ion has a charge of -2. Which would be the product of a reaction between these two elements?

Among the 4 following options, which is the correct answer?

- A: Al_{2}O
 
- B: Al_{2}O_{3}
 
- C: 2AlO_{3}
 
- D: Al_{3}O_{2}
 