Which equation could be used to find the perimeter of a rectangle that has a width of 12 cm and a length of 16 cm?
AP = 2 · 12 + 2 · 16
BP = 2 · 12 + 16
CP = 12 · 16
DP = 12 + 16
AP = 2 · 12 + 2 · 16
BP = 2 · 12 + 16
CP = 12 · 16
DP = 12 + 16