Who invented d-ary heap?

(a) Carl Rick

(b) Alan Turing

(c) Donald Johnson

(d) Euclid

Question is from Ternary Heap topic in chapter Heap of Data Structures & Algorithms I

I had been asked this question in a job interview.

Who invented d-ary heap?

(a) Carl Rick

(b) Alan Turing

(c) Donald Johnson

(d) Euclid

Question is from Ternary Heap topic in chapter Heap of Data Structures & Algorithms I

I had been asked this question in a job interview.