When were prime minister Nawaz Sharif,his daughter Maryam Nawaz and son-in-law Captain (retd) Muhammad Safdar indicated in a National Accountability Bureau (NAB) reference pertaining to Avenfield apartments in London?

A ) 19 October 2017

B ) 23 March 2017

C ) 12 April 2017 ✅

D ) 14 March 2017