How does Jerry's concern about his nosebleed affect his decision making about the tunnel?(paragraph 33)

Through the Tunnel" Doris Lessings
A.He considered postponing his swim through the tunnel to see a doctor.
B.He hesitates to swim through the tunnel after imagining the worst.
C.He seeks out the boys to ask them how to avoid nosebleeds.
D.He considers if he should warn the boys about the tunnel.