Consider the following function: : {0,1}^3 {0,1}^5 . f(x) is obtained from x by adding 0 to its start and 1 to its end. For example, f(101) = 01011.

Select the correct description of the function f.

a. One-to-one and onto

b. One-to-one but not onto

c. Onto but not one-to-one

d. Neither one-to-one nor onto