Which of the Following Describes the Pattern of Increasing Copies $\rightarrow$

Which of the following describes the pattern of increasing copies of DNA during PCR amplification?

A) 1 $\rightarrow$ 2 $\rightarrow$ 3 $\rightarrow$ 4
B) 1 $\rightarrow$ 2 $\rightarrow$ 4 $\rightarrow$ 8
C) 1 $\rightarrow$ 10 $\rightarrow$ 100 $\rightarrow$ 1000
D) 1 $\rightarrow$ 100 $\rightarrow$ 10000 $\rightarrow$ 1000000
E) The number of increasing copies does not follow a pattern.