Twenty Years Ago, Dmitri Consumed Bread Which Cost Him 10

Multiple Choice

Twenty years ago, Dmitri consumed bread which cost him 10 kopeks a loaf and potatoes which cost him 18 kopeks a sack.With his income of 230 kopeks, he bought 5 loaves of bread and 10 sacks of potatoes.Today he has an income of 400 kopeks.Bread now costs him 20 kopeks a loaf and potatoes cost him 25 kopeks a sack.Assuming his preferences haven't changed (and the sizes of loaves and sacks haven't changed) , when was he better off?

A) He was equally well off in the two periods.
B) He is better off today.
C) He was better off 20 years ago.
D) From the information given here, we are unable to tell.
E) None of the above.