All of the above? Or for the most part C
Answer is A) This is the first time I have met you.
B is the only logical answer the rest does not fit the answer
Answer: D) It is severe.
Explanation: Austerity, strict/harsh state of. one can deduce that it is not fearless or informal with minimal effort. Strict can become complex, but does not carry the meaning of complex, so we can eliminate that as well, which leaves us with severe as our answer.