Question:
Who was the head coach of the team FC Astra Giurgiu in Mar, 2018?

Context:
 Ionuț Badea is the head coach of FC Astra Giurgiu from May, 2021 to Jun, 2021. 
 Dan Alexa is the head coach of FC Astra Giurgiu from Jun, 2019 to Oct, 2019. 
 Edward Iordănescu is the head coach of FC Astra Giurgiu from Jun, 2017 to Apr, 2018. 
 Gheorghe Mulțescu is the head coach of FC Astra Giurgiu from Sep, 2018 to Nov, 2018. 
 Bogdan Andone is the head coach of FC Astra Giurgiu from Oct, 2019 to Sep, 2020. 
 Marius Măldărășanu is the head coach of FC Astra Giurgiu from Jun, 2018 to Sep, 2018. 
 Florin Stângă is the head coach of FC Astra Giurgiu from Jul, 2021 to Dec, 2022. 
 Costel Enache is the head coach of FC Astra Giurgiu from Nov, 2018 to Jun, 2019.

Answer:
Edward Iordănescu