$\text { Figure } 6 \text { '1 }$ -If R₁=4

$\text { Figure } 6 \text { '1 }$
-If R₁=4.7 $k \Omega$ , R₂=3.3 $\mathrm { k } \Omega$ and R₃=1 $\mathrm { k } \Omega$ in Figure 6-1 , the total resistance equals________

A) 660 $\Omega$
B) 5700 $\Omega$
C) 4125 $\Omega$
D) 5467 $\Omega$