please someone helpppp
At Beans & Bagels, a bagel costs $1 more than a cup of coffee. If 4 cups of coffee and 6 bagels cost $31, which of the following systems of equations can be used to determine the price of a bagel, b, and the price of a cup of coffee, c? ii. IV. 111. (c + 1 = b (4b + 6c = 31 c + 1 = b (6b+ 4c = 31 { c - 1 = b 6b + 4c = 31 c-1=b 14b + 6c = 31​