[单选题]
A cylindrical rod of length 12 cm and diameter 2.0 cm will just barely flce 2w6a:)qdcut1ns 8 ,0yepqj oat -vb ip/ /evi-knj r fvt;vzb52is,8/din 5// v/ vpz vj8-ir2-ifevtsidn,bk;bwater. What is its mass?
A. $38 \; g$
B. $75 \; g$
C. $150 \; g$
D. $300 \; g$
