Answer: A = meter (m)
B = cubic meter [tex]m^3[/tex]
C= pound (lb)
Explanation:
As we know that there are seven fundamental S.I. units which are used to find derived units.These are as follows:
1). Mass - Kilogram
2). Length - meter
3). Time - Seconds
4). Electric Current - Ampere
5). Amount of substance - Moles
6). Intensity of light - Candela
7). Temperature - Kelvin
Thus as can be seen, length has SI unit of meters (m), volume will have S.I unit of cubic meter [tex](m^3)[/tex] and mass has english units of pounds (lb).