Any help with these would be great 
1. Use mathematical induction to prove the statement 4 + 8 + 12+…+4n = 2n(n+1) is true for all positive integers n.
2. When using math induction to prove that (n4 - 4n2) is divisible by 3 for all natural numbers. First, we will assume that (k4 - 4k2) is divisible by 3. Then, we would need to show that ____ is divisible by 3.
A: (k+1)4 - 4(k+1)2
B: (k+1)4 - 4k2 + 1
C: k4 - 4k2 + k + 1
D: k4 - 4k2 + 1
1. Use mathematical induction to prove the statement 4 + 8 + 12+…+4n = 2n(n+1) is true for all positive integers n.
2. When using math induction to prove that (n4 - 4n2) is divisible by 3 for all natural numbers. First, we will assume that (k4 - 4k2) is divisible by 3. Then, we would need to show that ____ is divisible by 3.
A: (k+1)4 - 4(k+1)2
B: (k+1)4 - 4k2 + 1
C: k4 - 4k2 + k + 1
D: k4 - 4k2 + 1