...then why would there be a question...?

Visit the government site at:
http://www.e.gov.qa/eGovPortal/visaservice/
visaservicedetails.jsp?ServicePortal=VV

You cannot get a visa for 3 months. The maximum stay is 4 weeks, although the visa will say "good for 1 month", but you can only stay for 4 weeks, every additional day carries a penality of i think 200QR.