This question refers to the method we presented for the estimation of the size of a network using traceroute$-$like sampling. Suppose that whenever we ignore a target, we can always observe that target in traceroutes to other targets. Which of the following statements is TRUE?

Group of answer choices

In expectation, The estimated network size is equal to the number of observed nodes.

The estimated network size is larger than the number of observed nodes.

The estimated network size depends on the number of targets but not on the number of sources.

Since we can observe each target in our sample even if it is not included as a target, we can conclude that all non$-$source nodes are targets.