The spectators are either a Bullfrog or Chipmunk fan and no one is both.
Therefore, total spectators = total Bullfrog fans + total Chipmunk fans.
What is the ratio of Bullfrog fans to Chipmunk fans among spectators at the baseball game?

Statement 1: The number of Chipmunk fans among the spectators is 20% greater than the number of Bullfrog fans.
Let Chipmunk fan = C
Bullfrog fan = B
100% of total = C + B
Where C = B + 20%
100% = B + 20% + B
2B = (100 - 20)%
2B = 80%
B = 80%/2 = 40%
From 100% = C + B; where B = 40%
100% = C + 40%
C = (100 - 20)% = 60%
The ratio of Bullfrog to Chipmunk fans = 40 : 60

Statement 2:
The total number of spectators at the baseball game is 4,400.
Let Chipmunk fan = C
Bullfrog fan = B
Total = C + B; where total = 4,400
4,400 = C + B
If C = 2000 and B = 2400;
C + B = 4400, and B:C = 6:5
If C = 2200 and B = 2200;
C + B = 4400, and B:C = 1:1
Sine we cannot answer the target question with certainty, then, statement 2 is NOT SUFFICIENT.

Therefore, statement 1 alone is SUFFICIENT. Hence, the correct answer is option A.