Quarter (Q1) need to place in subject line of email dynamically

yeah it worked, and have a smal doubt.

If(intMonth <= 3, “Q1”, If(intMonth <= 6, “Q2”, If(intMonth <= 9, “Q3”, “Q4”)))

as per this logic <=9 is not less than 9 then it default take Q4 or need to write logic on that.