What are HK and GH?

Right triangle G J H has H as its right angle. K lies on G J and segment H K is perpendicular to G J. G K equals 2 and K J equals 8.
A. HK = 5; GH =29−−√
B. HK = 4; GH = 25–√
C. HK = 25–√; GH = 26–√
D. HK = 5–√; GH = 3