30 Points! PLEASE ANSWER ASAP! I just need to know the answer or if the option I have selected is correct. No explanation required.

Answer:
B
Step-by-step explanation:
Message if you want to know why,
Look up Pythagoras Theorem for more info, it will help with problems like these
[tex] {a}^{2} + {b}^{2} = {c}^{2} [/tex]