The answer is 72 (--> second choice).
I can prove it without calculator so you believe me:

The common difference is 12
Further explanation:
It is given that the infinite sequence is an arithmetic sequence
The common difference is the difference between consecutive terms of an arithmetic sequence.
Here,

The common difference is denoted by d.
Here,

The common difference is same for all proceeding terms.
So,
d = 12
Keywords: Infinite arithmetic sequence, Common difference
Learn more about arithmetic sequence at:
#LearnwithBrainly
Answer:
it is congruent by SAS axiom
So go with option A
Congruent -SAS
Hope it will help :)❤