The smallest number which when diminished by 7, is divisible 12, 16, 18, 21 and 28 is:	Choose the correct choice from the following answers
A) 1008 B) 1015 C) 1022 D) 1032 E) none of these

Rationale: "explanation required number = ( l . c . m . of 12,16 , 18 , 21 , 28 ) + 7 = 1008 + 7 = 1015 answer b"
Answer: B