They are a part of 2 dozen
The answers is A
Explanation ;)
Step-by-step explanation:

For this parallelogram to exist least value of x should be 4.
Because if x = 3
(x - 3)= 3 - 3 =0
Thus width of parallelogram would become zero as a result area of parallelogram would become zero i. e. Parallelogram won't exist.
Given,
567 + x = 1257
=> x = 1257 - 567
=> x = 690
Option c is correct.