What is the value of the CPI in 2020?

a) 1 (a) The value of the CPI in 2020 is 120.
b) 1 (b) The real wage per week in 2015 is $1,818.18
c) 1 (a) The value of the CPI in 2020 is 1.2.
d) 1 (b) The real wage per week in 2015 is $2,000.