In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to download microsoft office 2010 [title] Visit the office 2010 download page. [step] Microsoft office can be legally downloaded from microsoft's website as long as you have a valid 25-character product key. To find it easily, search for " using your office 2010 product key ". <sep> (A) [substeps] If you don't have a csso account, you may have to create one. You will need to verify your identity with microsoft office 2010. (B) [substeps] Office 2010 is no longer available for purchase or as a trial from microsoft. You can still buy boxed copies from other retailers. (C) [substeps] Leave one or more lines between the tabs on the homepage and the window you will be downloading to provide information about what you want to download. [title] Open the primary file you wish to download. (D) [title] Enter the windows code to install microsoft office 2010. [title] Click on the save file to run the pc then re-open microsoft office 2010 now to continue.
B

[header] How to make iranian bread [title] Mix together the yeast and the lukewarm water, then let stand for 5 minutes. [title] Combine the salt and flour, then add to the yeast and water mixture, mixing everything together thoroughly. [title] Knead the dough until it's very smooth. <sep> (A) [title] Pour the dough into a pre-floured loaf pan. [step] Leave room in the pan for the butter. (B) [title] Cut it into small pieces, form it in a bread bowl, etc. [step] And cover with a bit of water. (C) [step] You can choose to mix it in a standing mixer (which will take about 6-7 minutes), or to knead the dough by hand on a floured surface. [title] Coat the inside of a bowl with about 1 tsp of oil. (D) [title] Cut the dough into the shape of a muffin with the slits cut before fully closing. [title] Place the dough on your prepared muffin tray.
C

[header] How to prune houseplants [title] Use sharp scissors or garden shears. [step] Make sure the scissors or garden shears are very sharp, as dull shears can damage the plants. If you notice any dirt on the shears, soak them in water with a teaspoon of bleach and then wipe them dry. <sep> (A) [title] Determine how many cuttings you wish to create. [step] Many houseplants are grown in zones c and 7. (B) A clean tool will ensure your plants are not exposed to bacteria or pests when you prune them. [substeps] You can find garden shears for pruning online or at your local hardware store. (C) [substeps] Plastic surgeon-grade gardening scissors are not recommended for untrained gardeners. [title] Trim away diseased or misshapen plants. (D) [substeps] If you see a pop of rust on the blades after cleaning them, then the tools may be too dull or abrasive to use. Do not use sandpaper on the blades when pruning your houseplants.
B