It was a hot, sunny day. i took my bicycle for a long ride. i rode it down the long road and across the bridge over the lake. i was having such a good time with my trusty friend. but after an hour or so, my bicycle seemed worn out. i wanted to go to the top of king's hill. however, my bicycle just couldn't make it up the hill because

which of these responses completes the joke with a pun?

a.

it was two-tired

b.

it ran out of gas

c.

it ran its course

d.

it fell asleep at the wheel