In Canada, all postal codes have 6 characters that follow the pattern letter-digit-letter-digit-letter-digit. The first letter of the postal code identifies a specific region. Each of the remaining two letters in the postal code can be any of 20 letters, and each of the three digits can be any digit from 0 to 9. All letters and digits can be repeated.

In Alberta, all postal codes start with the letter T. How many postal codes are possible in Alberta?

Select one:

a.291 000

b.273 000

c.361 000

d.400 000