Avery napped for 110 minutes. Natalie napped for 190 minutes.

Christina said that Natalie napped for 70 minutes more than Avery.

Which expression can be used to check Christina's answer and is Christina correct?


a.190 + 70

Christina is not correct.


B.110 + 70

Christina is not correct.


c.190 - 70

Christina is correct.


d.110 – 70

Christina is not correct.