I Social Security, Old-Age Pensions, Many Apartment Leases and Many

i. Social security, old-age pensions, many apartment leases and many labor contracts are tied to the change in the CPI.
Ii) Millions of employees in automobile, steel and other industries have their wages adjusted upward when the CPI increases. The specifics are in the management-union contracts. These clauses in the contracts are referred to as "cola clauses."
Iii) If two or more series of index numbers have the same year as the base period, then they can be compared directly.

A) (i) , (ii) and (iii) are all correct statements
B) (i) and (ii) are correct statements, but not (iii) .
C) (i) and (iii) are correct statements but not (ii) .
D) (ii) and (iii) are correct statements but not (i) .
E) All statements are false