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Let d(n) denote the number of positive d...

Let d(n) denote the number of positive divisors of a positive integer n. Which of the following are correct?
1. d(5) = d(11)
2. d(5).d(11) = d(55)
3.d(5) + d(11) = d(16)
Select the correct answer using the code given below :

A

1 and 3 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

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