Pretty sure its D
Hope this helped! :)
A= 7,11
B=2,3,7
C=2,2,2,5
Because 7x11 =77 when both are prime numbers
2x3x7=42 when all 3 are prime
And 2x2x2x5=40 when all 4 numbers are prime
Her Dad gave that diary to her for one of her birthday's and she often wrote in it to express her hope as well as to document the experiences her, her family and friends had.