In drosophila development, the two maternal genes, bicoid and nanos, regulate the expression of a gap gene called 'hunch back'. Which among the following statement(s) is/are not true about these two genes?

Bicoid and nanos have opposite effects on a gene called hunch back.

Bicoid is a transcription factor that activates hunch back.

Nanos inhibits the translation hunch back mRNA's.

Bicoid is a transcription factor that inhibits hunch back.

The combined effect of biocoid and nanos results in production of high levelsof hunch back protein at the anterior of the embryo and low levels towards the posterior end.