please answer. im not sure if im doing the calculations right. thank you!

the numbers are : 1.2 nm and 0.6 nm

What are the Miller indices of vector A in the figure? (negative number represents overhead bar): 1.2 nm 1.2 nm 0.6 mm 1.2 nm 0.6 nm O (1-1-1] O (0-1-1] O [01-1] O [1-12)