The ratio of kg to g is
Step 1: Ratio :
Step 2: Explanation for correct option
Option (b):
Find the ratio of kg to g:
Therefore, option (b) is the correct answer.
Step 3: Explanation for incorrect option :
Option (a):
Option (c):
Option (d):
Calculating the ratio of kg to g, we get .
Therefore, options (a), (c) and (d) are incorrect answers.
Hence, option (b) is the correct answer.