Aman, Rahul, Raj and Nikhil each took the same spelling test.
♦ Aman spelled 7/10 of the words correctly.
♦ Rahul spelled 3/4 of the words correctly.
♦ Raj spelled 4/5 of the words correctly.
♦ Nikhil spelled 2/3 of the words correctly.
Who spelled the least number of words correctly and arrange their fraction in ascending order?
A 
B 
C 
D 
ummmmm......... could someone suggest an answer