Dan used the following method to convert 27.7778 cm/s to km/h. an equation is shown. the expression on the left has three terms separated by the multiplication sign. the first term is 27.7778 cm by 1 h. the second term is 1 km by 100,000 cm. the third term is 1 s by 0.00028 h. the number on the right of the equal to sign is 1 km per hour. (1 km = 100,000 cm and 1 s = 0.00028 h) what is the error in dan's conversion method?

a. 1 h should be written as 1 s.

b. 1 km should be written as 1 cm.

c. 27.7778 cm should be written as 27.7778 km.

d. 0.00028 h should be written as 0.00028 s.