The correct answer is OPTION 1 - To think of our Meeting here!

Given answer is as per NTA. The correct answer should be Option 3 as explained below:

Option 3 (Oh! Strange that we met here!) → Incorrect because it changes the tense to past (“met”), which alters the meaning of the original sentence.

Options 1, 2, and 4 correctly preserve this sense of present surprise. However, Option 3 changes the meaning and tense by using “met,” which refers to a past event rather than the present situation. Therefore, it is the incorrect exclamatory form.