Four statements are given below at A, B, C and D. There may be some errors in the given statement(s). The incorrect statement is your answer.

• The Trump administration is intensifying its effort to crack down the so-called sanctuary cities that refuse to comply with federal immigration authorities.
• Efforts were intensified by the Trump administration to crack down the sanctuary cities that refused to comply with federal immigration authorities.
• The so-called sanctuary cities that refused to abide by the federal immigration authorities will be cracked down by the intensified efforts of the Trump administration.
• Federal immigration authorities must be complied into by sanctuary cities if the efforts of the Trump Administration must be intensified.