Explanation:

First we need to figure out what numbers are exactly divisible by 7,12,16.
This will be the set {LCM,LCMx2,LCMx3,...}
LCM(7,12,16) = 48*7 = 336
when divide 1856 by 336 reminder=176. 

so subtract 176 to get No remainder and

subract 176-4=172 to get 4 as remainder
hence option 4 is correct.