Choose the set of numbers from the given alternatives that is similar to the given set. Given set: (21, 51, 15)

Select the set in which the numbers are related in the same way as the numbers of the following set. (7, 18, 123) (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits.)

Select the set in which the numbers are related in the same way as are the numbers of the following set. (11, 28, 143)