VAF 4A Application

Hi

I am on ILR and applying for Wife VISA who is in India.

I am working as contractor and have limited company withdrawing Salary and Dividends.

Can someone advise the below application fields:
do I come under Sole Trader or Self Employed?
Can I skip Part 3A, 3B and 3D?
Can I just fill 3C?
Do I need to fill Part 3D(Income from Other non - Employment sources?

Thanks

Can someone please respond if know