it's a. not sure if its B. I'll give branliest!

Answer:
P is complementary to x
Step-by-step explanation:
Complementary means adding to 90 degrees
P+x = 90 degrees
So P is complementary to x
Answer:
( A) ∠ P
∠P is complementary angle to ∠ X .
Step-by-step explanation:
P + X = 90°
P is complementary to X.