Which of the Following Conversion Formulas Is Correct for Lb $2.2 \mathrm{~kg}=1 \mathrm{lb}$

Multiple Choice

Which of the following conversion formulas is correct for lb and kg?

A) $2.2 \mathrm{~kg}=1 \mathrm{lb}$ OR
B) $2.2 \mathrm{lb}=1 \mathrm{~kg}$