The linear density of a rope is the ratio of its mass per unit length. It is given by the equation λ=ml, where λ is the linear density, m is the mass, and l is the length. If the linear density of a rope is given with units of gcm and the distance is given in units of cm, what would be the units for mass?(1 point) 1) 1g 2) g 3) gcm 4) g⋅cm