[单选题]
A plastic block of dimm).93ndtjc7dbnv hg1c)awr6aq h w(: e( )t7 qoe3fi-y/smqvjnsions 2.00 cm x 3.00 cm x 4.00 cm has a mass of 30.0 g. What is ioy)i/sq73q vt fm(e-jts density?
A. $0.80 \; g/cm^{3}$
B. $1.20 \; g/cm^{3}$
C. $1.25 \; g/cm^{3}$
D. $1.60 \; g/cm^{3}$
