If the range of the function f(x) = 7x – 2.7 is {14.1, 30.9, 41.4, 58.9, 68}, what is its domain?

a). {1.8, 3.4, 5.6, 9, 9.8}
b.) {3.2, 3.9, 5.8, 8.4, 9.1}
c.) {2.4, 4.8, 6.3, 8.8, 10.1}
d.) {3, 4.6, 6.7, 8.9, 10,8}