Which is the correct sequence for ootheca formation in a cockroach?

• A
  $1 \rightarrow 2 \rightarrow 3$
• B
  $3 \rightarrow 2 \rightarrow 1$
• C
  $1 \rightarrow 3 \rightarrow 2$
• D
  $2 \rightarrow 1 \rightarrow 3$