P Co, the parent company of a group, owns shares in three other companies. P 0〇!3 holdings are:
Q Shares giving control of 60% of the voting rights in Q Co R Shares giving control of 20% of the voting rights in R Co. remove all the directors of R Co P Co also has the right to appoint orS Shares giving control of 10%of the voting rights in S Co,shares
plus 90% of the non-voting preference
Which of these companies are subsidiaries of P Co?