Read the conversation given below and complete the paragraph that follows :
Salesman : May I help you ?
Sita : I want to buy a pen.
Salesman : Do you have any choice of a brand ?
Sita : Which brands do you have ?
Salesman : We have pens of all good brands.
The salesman asked Sita (a) .............. Sita replied that she wanted to buy a pen. The salesman asked her (b) ............... In reply Sita wanted to know (c) .................... . The salesman replied that (d) ..............