Option 1: This statement suggests that 110V is safer but more expensive to maintain. It is important to note that safety is not determined solely by the voltage level. While it is true that higher voltages can pose a greater risk of electric shock, safety measures such as proper insulation and grounding can effectively mitigate this risk. Additionally, the cost of maintaining a power supply depends on various factors such as infrastructure, distribution systems, and energy sources, and cannot be solely attributed to the voltage level. Therefore, this statement is not entirely accurate.

Option 2: This statement suggests that 110V is both safer and cheaper to maintain. As mentioned earlier, safety is not solely dependent on the voltage level. While lower voltages may reduce the risk of electric shock, other safety measures also play a crucial role. Moreover, the cost of maintaining a power supply is influenced by multiple factors, and the voltage level alone cannot determine the overall cost. Therefore, this statement is not entirely accurate.

Option 3: This statement suggests that 110V leads to lower power loss. This statement is correct. Power loss in electrical systems is influenced by factors such as resistance, current flow, and voltage. Lower voltages generally result in lower power loss as there is less resistance and current flow