[tex]\begin{gathered} 10\cdot4.7=47 \\ 47\text{ has two sig figures} \\ \\ 4.67+14.3=18.97 \\ 18.97\text{ has four sig figures} \\ \\ 201\cdot3.52=707.52 \\ 707.52\text{ has 5 sig figures} \\ \\ 100-47.4=52.6 \\ 52.6\text{ has 3 sig figures} \end{gathered}[/tex]
Therefore, the answers in 2 significant figures are B, C, and D.
