HELP PLEASEEE!!!!

The mass of a proton in scientific notation is 1.6 x 10-24 grams. What is the mass of a proton in standard form?

a. 0.0000000000000000000000016 grams

b. 0.00000000000000000016 grams

c. 16000000000000000000000000 grams

d. 160 x 10-26 grams