Multi-choice problem: Choose from the options at the end, and answer how do you do this: how to make chocolate caramels

Possible answers:
- Line an 8-inch-square pan with foil and brush with oil. Melt 2 sticks butter in a saucepan, then add 2 cups sugar, 1 1/4 cups light corn syrup, a 14-ounce can sweetened condensed milk and 1/4 cup cocoa powder. Bring to a boil and cook, stirring occasionally, until a candy thermometer reaches 248 degrees F, about 15 minutes. Pour into the prepared pan and cool. Cut into squares.;
- Line an 8-inch-square pan with foil and brush with oil. Melt 2 sticks butter in a saucepan, then add 2 cups sugar, 1 1/4 cups light corn syrup, a 14-ounce can sweetened condensed milk and 1/4 cup cocoa powder. Bring to a boil and cook, stirring occasionally, until a candy thermometer reaches 248 degrees F, about 15 minutes.Refrigerate for two weeks into the prepared pan and cool. Cut into squares.;
Line an 8-inch-square pan with foil and brush with oil. Melt 2 sticks butter in a saucepan, then add 2 cups sugar, 1 1/4 cups light corn syrup, a 14-ounce can sweetened condensed milk and 1/4 cup cocoa powder. Bring to a boil and cook, stirring occasionally, until a candy thermometer reaches 248 degrees F, about 15 minutes. Pour into the prepared pan and cool. Cut into squares.