Ramesh wants to choose a material for making filament of a bulb. The chosen material should possess which of the following properties?
(ⅰ) Low melting point
(ⅱ) Ability to glow at high temperatures
(ⅲ) High resistance
1
Only (ⅱ)
2
Only (ⅰ)
3
Both (ⅰ) and (ⅱ)
4
Both (ⅱ) and (ⅲ)