Has anyone done the 2nd performance task for geometry on edg2020

Iknow #2 is d. i just need to know why

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?