Three brands of pens A, B and C are available in packets of 5, 6 and 12, respectively. If a shopkeeper wants to buy equal number of pens of each brand, what is the minimum number of packets of each brand, he should buy?
1
A = 12, B = 10, C = 5
2
A = 10, B = 5, C = 12
3
A = 10, B = 12, C = 5
4
A = 5, B = 12, C = 10