Aglacier moves 2/3 kilometer in 4 months. what is its average speed in kilometers per month?

a
2/7 kilometer per month

b
2 2/3 kilometers per month

c
6 kilometers per month

d
1/6 kilometer per month

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?