At first, chemists believed that indium oxide had the formula InO. An experiment showed that $4.8\,\text{g}$ of indium reacted with $1.0\,\text{g}$ of oxygen to form $5.8\,\text{g}$ of indium oxide. The $A_r$ of oxygen was already known to be $16$. Which value for the $A_r$ of indium is obtained from these data?
- A38
- B77
- C115
- D154