Multi-choice problem: Choose from the options at the end, and answer how do you do this: How can I lighten my hair at home?

Choose from:
a). Lemon juice is one of the easiest and most common ways to lighten hair. ... The heat of the sun opens hair cuticles and the lemon juice lifts color, which allows the sun to bleach your strands. Squeeze fresh lemon juice and add it to a spray bottle along with a teaspoon of oil to keep your hair from drying out.;
b). Lemon juice is one of the easiest and most common ways to lighten hair. ... The heat of the sun opens hair cuticles and the lemon juice lifts color, which allows the sun to bleach your strands. Squeeze fresh lemon juice and add it to a spray bottle along with a tablespoon of oil to keep your hair from drying out.;
a).