Write the set `B={1,2,3,4,7,14, 28}` in the set builder form.

Options

A. `B={x:x in N and x" is a multiple of 1"}`
B. `B={x:x in N and x" is a natural number"}`
C. `B={x:x in N and x " is a factor of "21}`
D. `B={x:x in N and x " is a factor of "28}`

Answer

D