In a class of 60, where girls are twice that of boys, Gopu ranked seventeenth from the top. If there are 9 girls ahead of Gopu, how many boys are after him in rank?
A12
B23
C3
D7
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ഒരു വരിയിൽ രാമ മുന്നിൽ നിന്ന് പതിനെട്ടാമൻ ആണ് പിന്നിൽനിന്നും പതിനാറാമനും ആണ് എങ്കിൽ വരിൽ എത്രപേരുണ്ട് ?