Physical capital refers to man-made goods used in the production process, such as machinery, tools, buildings, and infrastructure. The features of physical capital are:
Tangibility: Physical capital is tangible, meaning it can be touched and seen. This is a valid feature of physical capital.
Tradability: Physical capital can generally be traded (sold or purchased), although some assets like infrastructure might have limited tradability. Still, tradability is usually considered a characteristic of physical capital.
Immobility: This is not a defining feature. Physical capital such as machines and equipment can often be relocated. Immobility is typically associated with land (a natural resource), not physical capital.
Therefore, if we consider immobility as not a feature, then option (B) (ii) and (iii) makes sense. However, some contexts may question tradability (in limited cases), making (C) or (D) also arguable based on nuanced interpretations.