We have two normal distributions in the graph.
The highest density correspond to the mean of each distribution (indicated with the dashed line), so one distribution has a mean of 7 and the other has a mean of 12.
We also can see that the spread of each distribution is different, so their standard deviations must differ (we can not tell their values altough).
Then, from the previous statements and the options, we can conclude that the only option that is true is "the two distributions have means that differ by 5 units and different standard deviations".
Answer: The two distributions have means that differ by 5 units and different standard deviations [First option]