How Is a Trans Fatty Acid Different from Other Unsaturated

How is a trans fatty acid different from other unsaturated fatty acids?

A) A trans fatty acid has at least two hydrogen atoms attached to each carbon atom in the chain
B) At a trans fatty acid's point of unsaturation, the hydrogens are on opposite sides of the carbon chain instead of on the same side
C) A trans fatty acid's carbon chain contains at least one double bond between two carbon atoms instead of all single bonds
D) At a trans fatty acid's point of unsaturation, the hydrogens are on the same side of the carbon chain instead of on opposite sides