One Each of the Following Pairs of Statements About Company

One each of the following pairs of statements about company flotation are correct: A placing of shares involves:
A. Placing the shares on the main stock market
B. An arrangement to sell shares to specific investors and institutions
An offer for sale is:
C. An offer to the general public and institutional investors to buy shares
D. An offer to selected institutional investors to buy shares
Which of the statements are correct?

A) A and C
B) B and C
C) B and D
D) A and D