Im confused by what its asking when it states f{ 1 if decimal is lower then 10 and 0 otherwise, same for g function?

Let ABCD2 be a 4-bit non-negative integer with corresponding decimal values 00002=01000012=11000102=21000112=31011112=1510 Consider the two functions f(A,B,C,D) and g(A,B,C,D) below. Truth Table 1. The function f(A,B,C,D) is f={10ifthedecimalvalueofABCD2islessthan1010otherwise Give for f in the space below: (a) its TT (b) its CSOP in the concise mi notation (c) its CPOS in the concise Mi notation 2. The function g(A,B,C,D) is g={01iffunctionf=1iffunctionf=0 Give for g in the space below: (a) its CSOP in the concise mi notation (b) its CPOS in the concise Mi notation