Answer: Not too sure about it... but it might be B.
Explanation:
A - The dog is probably lost :))
Adam and Eve life or death
back and forth lock and key
bacon and eggs lost and found
bed and breakfast man and wife
birds and bees name and address
black and white nice and easy
body and soul null and void
bread and butter peaches and cream
bread and water pen and pencil
bricks and mortar pork and beans
bride and groom pots and pans
business and pleasure prim and proper
by and large profit and