Which of the following is a subset {1,4,7,10,13,16,19,22}

[1.4.7.] is a subset because EVERY number in the set I just wrote can be found in the original set given. now if i write [1,49,7] it would not be cause it was not given in the original set

B. 2 1/2 feet. multiply 2.5 inches by 12 to get thirty inches then divide by 12 to get 2.5 feet