Indicate True (T) and False (F) Statements Below Regarding DNA

Short Answer

Indicate true (T) and false (F) statements below regarding DNA methylation in humans. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTF.
( ) DNA methylation makes repression of gene expression "leakier."
( ) DNA methylation at the promoter region is usually an indication of active transcription.
( ) CG islands are nonpermissive for RNA polymerase assembly.
( ) The dinucleotide 5?-GC-3? is much more common than 5?-CG-3? in the human genome.