What is the output of the given generator function code?

To understand the correct output of the generator function, we first need to consider how generator functions work in JavaScript. A generator function allows us to define an iterative algorithm by using the yield statement, which pauses the function execution and returns a value, but keeps track of its state for subsequent calls.

In the context of the provided options, if the generator function yields multiple values, it is essential to look at how and when these values are yielded. If the function is designed to produce a sequence of values based on a specified algorithm, the output at each step will reflect that logic.

If the generator implementation yields values of 10 and 20 during its execution, this would occur after the initial state, leading to the conclusion that the next values yielded will simply continue from there. Thus, the sequence of outputs observed would end up being 10 followed by 20, resulting in an output reflective of these two specific values.

To summarize, the reason the output of 10 and 20 is the correct answer is based on how the yields were designed within the generator function, providing a sequential flow from its execution. The eventual output would consist solely of the last value yielded before the function reached its completion, without any intermediate