Which of the following options combinations are internally consistent (i.e., both positions would be profitable or unprofitable at the same time) ?

A. Sell puts and buy calls

B. Buy puts and sell calls

C. Buy puts and buy calls

D. Both a) and b)

Which of these cities are included among the three (3) most important financial centers in the world? (choose all that apply)

		Zurich
		New York
		Tokyo
		Paris
		Munich
		London