[R] Help in getting info from a DataFrame

[ADias]

Hi, 

I have a data.frame and I need to know witch store sold more "Lapiseiras". I
got a point where I am almost sure I am very closed to the answer but I am
missing somethiing.

So, the data frame is this one

dados<-data.frame(Store=c("Setubal","lx","Aveiro","Coimbra","Aveiro","Evora","Aveiro","Coimbra","Setubal"),Prod=c("Bloco
Desenho","Bloco
Desenho","Tinteiro","Régua","Lapiseira","Regua","Tinteiro","Lapiseira","Lapiseira"),qtd=c(2,1,2,1,3,1,1,1,1))

then I do this:

dados[dados$Prod=="Lapiseira",c("Store","qtd")]

and I get this:

    Store qtd
5  Aveiro   3
8 Coimbra   1
9 Setubal   1 

but the answer I want to obtain is:

"Aveiro"

can you help me please?

thanks
AD
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