1985 AMC 12 Question 5 - thichhoctoan.com

Question 5

Which terms must be removed from the sum $$
\frac12+\frac14+\frac16+\frac18+\frac1{10}+\frac1{12}
$$ if the sum of the remaining terms is to equal $1?$

$\frac14$ and $\frac18$
$\frac14$ and $\frac1{12}$
$\frac18$ and $\frac1{12}$
$\frac16$ and $\frac1{10}$
$\frac18$ and $\frac1{10}$