1. Now we are going to use the geom_histogram function to make a histogram of the heights in the heights data frame. When reading the documentation for this function we see that it requires just one mapping, the values to be used for the histogram.

Read the documentation for the geom_histogram function. Which answer is correct?

1. This function uses 35 bins by default
2. This function requires the variable for which we will construct the histogram and the frequencies of each possible value
3. This function requires just one mapping, which is the variable for which we will construct a histogram
4. No color can be added to the histogram through this function