Creep is _________ to the strength of concrete. A. Equal B. Similar

creep-is-to-the-strength-of-concrete-a-equal-b-similar

Creep is _________ to the strength of concrete.

A. Equal

B. Similar

C. Directly proportional

D. Inversely proportional

I have been asked this question during an interview.

The above asked question is from Factors Affecting Creep and Elasticity in division Elasticity, Creep and Shrinkage of Concrete Technology

Right answer is D. Inversely proportional

To elaborate: Creep increases with increase in water/cement ratio. In other words, it can also be said that creep is inversely proportional to the strength of concrete.