A mathematician used the division algorithm to divide the number 18 by another number b. Their computation resulted in the facts that the quotient q = 4 and the remainder r = - 6 Determine the value of b.
a) - b = 6
b) b = 66
c) There must have been a mistake, as there is no value of b that makes this possible.
d) b = 108
e) b-0