Chapter 3 Lab 1

I had already ran the same aggregation stages and I got exactly the same result as shown in the 4th option. But still it is denying my answer. Where actually I’m going wrong? Could someone please correct the regular expression?

Hi,

I just checked the lab and got the expected result, the regular expression looks correct to me. Could you send me a private message to take a look at your query please?

José Carlos