Consider the test item given below and match the following:
| Column A | Column B |
| Unit of force | Joule |
| Symbol of iron | HCl |
| Formula of hydrochloric acid | Ag |
| Unit of work | |
| Symbol of silver | Calorie |
| Symbol of battery | Fe Newton |
Which of the following is not a reason that can be given to justify that the item is poorly constructed?
1
There is inconsistency among entries
2
For an entry in column A there are at the most two plausible entries in column B
3
There are unequal entries in column A and B
4
The matching pairs can be easily guessed